bibliography for assignments

• Grades 6-12
• School Leaders

Get 50% off your first box of Home Chef! 🥙

How To Write a Bibliography (Plus Printable Guide With Examples)

Give credit where credit is due.

Writing a research paper involves a lot of work. Students need to consult a variety of sources to gather reliable information and ensure their points are well supported. Research papers include a bibliography, which can be a little tricky for students. Learn how to write a bibliography in multiple styles and find basic examples below.

Plus grab our printable Bibliography Guide for Students with examples from all three major style guides: APA (American Psychological Association), MLA (Modern Language Association), or The Chicago Manual of Style . Just fill out the form on this page to get the free guide.

IMPORTANT: Each style guide has its own very specific rules, and they often conflict with one another. Additionally, each type of reference material has many possible formats, depending on a variety of factors. The overviews shown here are meant to guide students in writing basic bibliographies, but this information is by no means complete. Students should always refer directly to the preferred style guide to ensure they’re using the most up-to-date formats and styles.

What is a bibliography?

When you’re researching a paper, you’ll likely consult a wide variety of sources. You may quote some of these directly in your work, summarize some of the points they make, or simply use them to further the knowledge you need to write your paper. Since these ideas are not your own, it’s vital to give credit to the authors who originally wrote them. This list of sources, organized alphabetically, is called a bibliography.

A bibliography should include all the materials you consulted in your research, even if you don’t quote directly from them in your paper. These resources could include (but aren’t limited to):

• Books and e-books
• Periodicals like magazines or newspapers
• Online articles or websites
• Primary source documents like letters or official records

Bibliography vs. References

These two terms are sometimes used interchangeably, but they actually have different meanings. As noted above, a bibliography includes all the materials you used while researching your paper, whether or not you quote from them or refer to them directly in your writing.

A list of references only includes the materials you cite throughout your work. You might use direct quotes or summarize the information for the reader. Either way, you must ensure you give credit to the original author or document. This section can be titled “List of Works Cited” or simply “References.”

Your teacher may specify whether you should include a bibliography or a reference list. If they don’t, consider choosing a bibliography to show all the works you used in researching your paper. This can help the reader see that your points are well supported and allow them to do further reading on their own if they’re interested.

Bibliography vs. Citations

Citations refer to direct quotations from a text that are woven into your own writing. There are a variety of ways to write citations, including footnotes and endnotes. These are generally shorter than the entries in a reference list or bibliography. Learn more about writing citations here.

What does a bibliography entry include?

Depending on the reference material, bibliography entries include a variety of information intended to help a reader locate the material if they want to refer to it themselves. These entries are listed in alphabetical order and may include: ADVERTISEMENT

• Author/s or creator/s
• Publication date
• Volume and issue numbers
• Publisher and publication city
• Website URL

These entries don’t generally need to include specific page numbers or locations within the work (except for print magazine or journal articles). That type of information is usually only needed in a footnote or endnote citation.

What are the different bibliography styles?

In most cases, writers use one of three major style guides: APA (American Psychological Association), MLA (Modern Language Association), or The Chicago Manual of Style . There are many others as well, but these three are the most common choices for K–12 students.

Many teachers will state their preference for one style guide over another. If they don’t, you can choose your own preferred style. However, you should also use that guide for your entire paper, following their recommendations for punctuation, grammar, and more. This will ensure you are consistent throughout.

Below, you’ll learn how to write a simple bibliography using each of the three major style guides. We’ve included details for books and e-books, periodicals, and electronic sources like websites and videos. If the reference material type you need to include isn’t shown here, refer directly to the style guide you’re using.

APA Style Bibliography and Examples

Technically, APA style calls for a list of references instead of a bibliography. If your teacher requires you to use the APA style guide , you can limit your reference list to only items you cite throughout your work.

How To Write a Bibliography (References) Using APA Style

Here are some general notes on writing an APA reference list:

• Title your bibliography section “References” and center the title on the top line of the page.
• Do not center your references; they should be left-aligned. For longer items, subsequent lines should use a hanging indent of 1/2 inch.
• Include all types of resources in the same list.
• Alphabetize your list by author or creator, last name first.
• Do not spell out the author/creator’s first or middle name—only use their initials.
• If there are multiple authors/creators, use an ampersand (&) before the final author/creator.
• Place the date in parentheses.
• Capitalize only the first word of the title and subtitle, unless the word would otherwise be capitalized (proper names, etc.).
• Italicize the titles of books, periodicals, and videos.
• For websites, include the full site information, including the http:// or https:// at the beginning.

Books and E-Books APA Bibliography Examples

For books, APA reference list entries use this format (only include the publisher’s website for e-books):

Last Name, First Initial. Middle Initial. (Publication date). Title with only first word capitalized (unless there’s a proper name/noun) . Publisher. Publisher’s website

• Wynn, S. (2020). City of London at war 1939–45 . Pen & Sword Military. https://www.pen-and-sword.co.uk/City-of-London-at-War-193945-Paperback/p/17299

Periodical APA Bibliography Examples

For journal or magazine articles, use the following format. If you viewed the article online, include the URL at the end of the citation.

Last Name, First Initial. Middle Initial. (Publication date). Title of article. Magazine or Journal Title (Volume number) Issue number, page numbers. URL

• Bell, A. (2009). Landscapes of fear: Wartime London, 1939–1945. Journal of British Studies (48) 1, 153–175. https://www.jstor.org/stable/25482966

Here’s the format for newspapers. For print editions, include the page number/s. For online articles, include the full URL:

Last Name, First Initial. Middle Initial. (Year, Month Date) Title of article. Newspaper title. Page number/s. URL

• Blakemore, E. (2022, November 12) Researchers track down two copies of fossil destroyed by the Nazis.  The Washington Post. https://www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/

Electronic APA Bibliography Examples

For articles with a specific author on a website, use this format:

Last Name, First Initial. Middle Initial. (Year, Month Date). Title . Site name. URL

• Wukovits, J. (2023, January 30). A World War II survivor recalls the London Blitz . British Heritage . https://britishheritage.com/history/world-war-ii-survivor-london-blitz

When an online article doesn’t include a specific author or date, list it like this:

Title . (Year, Month Date). Site name. Retrieved Month Date, Year, from URL

• Growing up in the Second World War . (n.d.). Imperial War Museums. Retrieved May 12, 2023, from https://www.iwm.org.uk/history/growing-up-in-the-second-world-war

When you need to list a YouTube video, use the name of the account that uploaded the video, and format it like this:

Name of Account. (Upload year, month day). Title [Video]. YouTube. URL

• War Stories. (2023, January 15). How did London survive the Blitz during WW2? Cities at war: London [Video]. YouTube. https://youtu.be/uwY6JlCvbxc

For more information on writing APA bibliographies, see the APA Style Guide website.

APA Bibliography (Reference List) Example Pages

MLA Style Bibliography Examples

MLA style calls for a Works Cited section, which includes all materials quoted or referred to in your paper. You may also include a Works Consulted section, including other reference sources you reviewed but didn’t directly cite. Together, these constitute a bibliography. If your teacher requests an MLA Style Guide bibliography, ask if you should include Works Consulted as well as Works Cited.

How To Write a Bibliography (Works Cited and Works Consulted) in MLA Style

For both MLA Works Cited and Works Consulted sections, use these general guidelines:

• Start your Works Cited list on a new page. If you include a Works Consulted list, start that on its own new page after the Works Cited section.
• Center the title (Works Cited or Works Consulted) in the middle of the line at the top of the page.
• Align the start of each source to the left margin, and use a hanging indent (1/2 inch) for the following lines of each source.
• Alphabetize your sources using the first word of the citation, usually the author’s last name.
• Include the author’s full name as listed, last name first.
• Capitalize titles using the standard MLA format.
• Leave off the http:// or https:// at the beginning of a URL.

Books and E-Books MLA Bibliography Examples

For books, MLA reference list entries use the following format. Add the URL at the end for e-books.

Last Name, First Name Middle Name. Title . Publisher, Date. URL

• Wynn, Stephen. City of London at War 1939–45 . Pen & Sword Military, 2020. www.pen-and-sword.co.uk/City-of-London-at-War-193945-Paperback/p/17299

Periodical MLA Bibliography Examples

Here’s the MLA-style format for magazines, journals, and newspapers. For online articles, add the URL at the end of the listing:

For magazines and journals:

Last Name, First Name. “Title: Subtitle.” Name of Journal , volume number, issue number, Date of Publication, First Page Number–Last Page Number.

• Bell, Amy. “Landscapes of Fear: Wartime London, 1939–1945.” Journal of British Studies , vol. 48, no. 1, January 2009, pp. 153–175. www.jstor.org/stable/25482966

When citing newspapers, include the page number/s for print editions or the URL for online articles:

Last Name, First Name. “Title of article.” Newspaper title. Page number/s. Year, month day. Page number or URL

• Blakemore, Erin. “Researchers Track Down Two Copies of Fossil Destroyed by the Nazis.” The Washington Post. 2022, Nov. 12. www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/

Electronic MLA Bibliography Examples

Last Name, First Name. Year. “Title.” Month Day, Year published. URL

• Wukovits, John. 2023. “A World War II Survivor Recalls the London Blitz.” January 30,   2023. https://britishheritage.com/history/world-war-ii-survivor-london-blitz

Website. n.d. “Title.” Accessed Day Month Year. URL.

• Imperial War Museum. n.d. “Growing Up in the Second World War.” Accessed May 9, 2023. www.iwm.org.uk/history/growing-up-in-the-second-world-war.

Here’s how to list YouTube and other online videos:

Creator, if available. “Title of Video.” Website. Uploaded by Username, Day Month Year. URL.

• “How did London survive the Blitz during WW2?” Cities at war: London | War stories.” YouTube . Uploaded by War Stories, 15 Jan. 2023. youtu.be/uwY6JlCvbxc.

For more information on writing MLA-style bibliographies, see the MLA Style website.

MLA Bibliography (Works Cited) Example Pages

Chicago Manual of Style Bibliography Examples

The Chicago Manual of Style (sometimes called “Turabian”) actually has two options for citing reference material: Notes and Bibliography and Author-Date. Regardless of which you use, you’ll need a complete detailed list of reference items at the end of your paper. The examples below demonstrate how to write that list.

How To Write a Bibliography Using The Chicago Manual of Style

Here are some general notes on writing a Chicago -style bibliography:

• You may title it “Bibliography” or “References.” Center this title at the top of the page and add two blank lines before the first entry.
• Left-align each entry, with a hanging half-inch indent for subsequent lines of each entry.
• Single-space each entry, with a blank line between entries.
• Include the “http://” or “https://” at the beginning of URLs.

Books and E-Books Chicago Manual of Style Bibliography Examples

For books, Chicago -style reference list entries use the following format. (For print books, leave off the information about how the book was accessed.)

Last Name, First Name Middle Name. Title . City of Publication: Publisher, Date. How e-book was accessed.

• Wynn, Stephen. City of London at War 1939–45 . Yorkshire: Pen & Sword Military, 2020. Kindle edition.

Periodical Chicago Manual of Style Bibliography Examples

Here’s the style format for magazines, journals, and newspapers. For online articles, add the URL at the end of the listing.

For journal and magazine articles, use this format:

Last Name, First Name. Year of Publication. “Title: Subtitle.” Name of Journal , Volume Number, issue number, First Page Number–Last Page Number. URL.

• Bell, Amy. 2009. “Landscapes of Fear: Wartime London, 1939–1945.” Journal of British Studies, 48 no. 1, 153–175. https://www.jstor.org/stable/25482966.

When citing newspapers, include the URL for online articles:

Last Name, First Name. Year of Publication. “Title: Subtitle.” Name of Newspaper , Month day, year. URL.

• Blakemore, Erin. 2022. “Researchers Track Down Two Copies of Fossil Destroyed by the Nazis.” The Washington Post , November 12, 2022. https://www.washingtonpost.com/science/2022/11/12/ichthyosaur-fossil-images-discovered/.

Electronic Chicago Manual of Style Bibliography Examples

Last Name, First Name Middle Name. “Title.” Site Name . Year, Month Day. URL.

• Wukovits, John. “A World War II Survivor Recalls the London Blitz.” British Heritage. 2023, Jan. 30. britishheritage.com/history/world-war-ii-survivor-london-blitz.

“Title.” Site Name . URL. Accessed Month Day, Year.

• “Growing Up in the Second World War.” Imperial War Museums . www.iwm.org.uk/history/growing-up-in-the-second-world-war. Accessed May 9, 2023.

Creator or Username. “Title of Video.” Website video, length. Month Day, Year. URL.

• War Stories. “How Did London Survive the Blitz During WW2? | Cities at War: London | War Stories.” YouTube video, 51:25. January 15, 2023. https://youtu.be/uwY6JlCvbxc.

For more information on writing Chicago -style bibliographies, see the Chicago Manual of Style website.

Chicago Manual of Style Bibliography Example Pages

Get Your Free Printable Bibliography Style Guide

Just fill out the form on this page to grab our printable Bibliography Guide for Students with examples from all three major style guides: APA (American Psychological Association), MLA (Modern Language Association), or The Chicago Manual of Style .

Now that you know how to write a bibliography, take a look at the Best Websites for Teaching & Learning Writing .

Plus, get all the latest teaching tips and ideas when you sign up for our free newsletters , you might also like.

Our Free 2024-2025 Teacher Calendar Is Available Now!

Save, print, and get organized for the new year. Continue Reading

Copyright © 2024. All rights reserved. 5335 Gate Parkway, Jacksonville, FL 32256

Generate formatted bibliographies, citations, and works cited automatically

What is mybib.

MyBib is a free bibliography and citation generator that makes accurate citations for you to copy straight into your academic assignments and papers.

If you're a student, academic, or teacher, and you're tired of the other bibliography and citation tools out there, then you're going to love MyBib. MyBib creates accurate citations automatically for books, journals, websites, and videos just by searching for a title or identifier (such as a URL or ISBN).

Plus, we're using the same citation formatting engine as professional-grade reference managers such as Zotero and Mendeley, so you can be sure our bibliographies are perfectly accurate in over 9,000 styles -- including APA 6 & 7, Chicago, Harvard, and MLA 7 & 8.

The best papers start with EasyBib®

Powered by chegg.

Start a new citation or manage your existing projects.

Scan your paper for plagiarism and grammar errors.

Check your paper for grammar and plagiarism

Catch plagiarism and grammar mistakes with our paper checker

Wipe out writing errors with EasyBib® Plus

Double check for plagiarism mistakes and advanced grammar errors before you turn in your paper.

• expert check

Know you're citing correctly

No matter what citation style you're using (APA, MLA, Chicago, etc.) we'll help you create the right bibliography

Check for unintentional plagiarism

Scan your paper the way your teacher would to catch unintentional plagiarism. Then, easily add the right citation

Strengthen your writing

Give your paper an in-depth check. Receive feedback within 24 hours from writing experts on your paper's main idea, structure, conclusion, and more.

Find and fix grammar errors

Don't give up sweet paper points for small mistakes. Our algorithms flag grammar and writing issues and provide smart suggestions

EasyBib® Guides & Resources

Mla format guide.

This is the total package when it comes to MLA format. Our easy to read guides come complete with examples and step-by-step instructions to format your full and in-text citations, paper, and works cited in MLA style. There’s even information on annotated bibliographies.

Works Cited | In-Text Citations | Bibliography | Annotated Bibliography | Website | Book | Journal | YouTube | View all MLA Citation Examples

APA Format Guide

Get the facts on citing and writing in APA format with our comprehensive guides. Formatting instructions, in-text citation and reference examples, and sample papers provide you with the tools you need to style your paper in APA.

Reference Page | In-Text Citations | Annotated Bibliography | Website | Books | Journal | YouTube | View all APA citation Examples

Chicago Format Guide

Looking to format your paper in Chicago style and not sure where to start? Our guide provides everything you need! Learn the basics and fundamentals to creating references and footnotes in Chicago format. With numerous examples and visuals, you’ll be citing in Chicago style in no time.

Footnotes | Website | Book | Journal

Harvard Referencing Guide

Learn the requirements to properly reference your paper in Harvard style. The guides we have provide the basics and fundamentals to give credit to the sources used in your work.

In-Text Citations | Books | Article | YouTube | View all Harvard Referencing Examples

Check Your Paper

Avoid common grammar mistakes and unintentional plagiarism with our essay checker. Receive personalized feedback to help identify citations that may be missing, and help improve your sentence structure, punctuation, and more to turn in an error-free paper.

Grammar Check | Plagiarism Checker | Spell Check

Learn From Our Innovative Blog

Our blog features current and innovative topics to keep you up to speed on citing and writing. Whether you’re an educator, student, or someone who lives and breathes citations (it’s not as uncommon as you might think!), our blog features new and exciting articles to discover and learn from.

Looking for Other Tools and Resources?

Our Writing Center is jam-packed with tons of exciting resources. Videos, infographics, research guides, and many other citation-related resources are found here. Check it out to find what you need to succeed!

• EasyBib® Plus
• Citation Guides
• Chicago Style Format
• Terms of Use
• Global Privacy Policy
• Cookie Notice
• DO NOT SELL MY INFO

How to Write a Bibliography for a Research Paper

Do not try to “wow” your instructor with a long bibliography when your instructor requests only a works cited page. It is tempting, after doing a lot of work to research a paper, to try to include summaries on each source as you write your paper so that your instructor appreciates how much work you did. That is a trap you want to avoid. MLA style, the one that is most commonly followed in high schools and university writing courses, dictates that you include only the works you actually cited in your paper—not all those that you used.

Academic Writing, Editing, Proofreading, And Problem Solving Services

Get 10% off with 24start discount code, assembling bibliographies and works cited.

• If your assignment calls for a bibliography, list all the sources you consulted in your research.
• If your assignment calls for a works cited or references page, include only the sources you quote, summarize, paraphrase, or mention in your paper.
• If your works cited page includes a source that you did not cite in your paper, delete it.
• All in-text citations that you used at the end of quotations, summaries, and paraphrases to credit others for their ideas,words, and work must be accompanied by a cited reference in the bibliography or works cited. These references must include specific information about the source so that your readers can identify precisely where the information came from.The citation entries on a works cited page typically include the author’s name, the name of the article, the name of the publication, the name of the publisher (for books), where it was published (for books), and when it was published.

The good news is that you do not have to memorize all the many ways the works cited entries should be written. Numerous helpful style guides are available to show you the information that should be included, in what order it should appear, and how to format it. The format often differs according to the style guide you are using. The Modern Language Association (MLA) follows a particular style that is a bit different from APA (American Psychological Association) style, and both are somewhat different from the Chicago Manual of Style (CMS). Always ask your teacher which style you should use.

A bibliography usually appears at the end of a paper on its own separate page. All bibliography entries—books, periodicals, Web sites, and nontext sources such radio broadcasts—are listed together in alphabetical order. Books and articles are alphabetized by the author’s last name.

Most teachers suggest that you follow a standard style for listing different types of sources. If your teacher asks you to use a different form, however, follow his or her instructions. Take pride in your bibliography. It represents some of the most important work you’ve done for your research paper—and using proper form shows that you are a serious and careful researcher.

Bibliography Entry for a Book

A bibliography entry for a book begins with the author’s name, which is written in this order: last name, comma, first name, period. After the author’s name comes the title of the book. If you are handwriting your bibliography, underline each title. If you are working on a computer, put the book title in italicized type. Be sure to capitalize the words in the title correctly, exactly as they are written in the book itself. Following the title is the city where the book was published, followed by a colon, the name of the publisher, a comma, the date published, and a period. Here is an example:

Format : Author’s last name, first name. Book Title. Place of publication: publisher, date of publication.

• A book with one author : Hartz, Paula.  Abortion: A Doctor’s Perspective, a Woman’s Dilemma . New York: Donald I. Fine, Inc., 1992.
• A book with two or more authors : Landis, Jean M. and Rita J. Simon.  Intelligence: Nature or Nurture?  New York: HarperCollins, 1998.

Bibliography Entry for a Periodical

A bibliography entry for a periodical differs slightly in form from a bibliography entry for a book. For a magazine article, start with the author’s last name first, followed by a comma, then the first name and a period. Next, write the title of the article in quotation marks, and include a period (or other closing punctuation) inside the closing quotation mark. The title of the magazine is next, underlined or in italic type, depending on whether you are handwriting or using a computer, followed by a period. The date and year, followed by a colon and the pages on which the article appeared, come last. Here is an example:

Format:  Author’s last name, first name. “Title of the Article.” Magazine. Month and year of publication: page numbers.

• Article in a monthly magazine : Crowley, J.E.,T.E. Levitan and R.P. Quinn.“Seven Deadly Half-Truths About Women.”  Psychology Today  March 1978: 94–106.
• Article in a weekly magazine : Schwartz, Felice N.“Management,Women, and the New Facts of Life.”  Newsweek  20 July 2006: 21–22.
• Signed newspaper article : Ferraro, Susan. “In-law and Order: Finding Relative Calm.”  The Daily News  30 June 1998: 73.
• Unsigned newspaper article : “Beanie Babies May Be a Rotten Nest Egg.”  Chicago Tribune  21 June 2004: 12.

Bibliography Entry for a Web Site

For sources such as Web sites include the information a reader needs to find the source or to know where and when you found it. Always begin with the last name of the author, broadcaster, person you interviewed, and so on. Here is an example of a bibliography for a Web site:

Format : Author.“Document Title.” Publication or Web site title. Date of publication. Date of access.

Example : Dodman, Dr. Nicholas. “Dog-Human Communication.”  Pet Place . 10 November 2006.  23 January 2014 < http://www.petplace.com/dogs/dog-human-communication-2/page1.aspx >

After completing the bibliography you can breathe a huge sigh of relief and pat yourself on the back. You probably plan to turn in your work in printed or handwritten form, but you also may be making an oral presentation. However you plan to present your paper, do your best to show it in its best light. You’ve put a great deal of work and thought into this assignment, so you want your paper to look and sound its best. You’ve completed your research paper!

Back to  How To Write A Research Paper .

ORDER HIGH QUALITY CUSTOM PAPER

• PRO Courses Guides New Tech Help Pro Expert Videos About wikiHow Pro Upgrade Sign In
• EDIT Edit this Article
• EXPLORE Tech Help Pro About Us Random Article Quizzes Request a New Article Community Dashboard This Or That Game Happiness Hub Popular Categories Arts and Entertainment Artwork Books Movies Computers and Electronics Computers Phone Skills Technology Hacks Health Men's Health Mental Health Women's Health Relationships Dating Love Relationship Issues Hobbies and Crafts Crafts Drawing Games Education & Communication Communication Skills Personal Development Studying Personal Care and Style Fashion Hair Care Personal Hygiene Youth Personal Care School Stuff Dating All Categories Arts and Entertainment Finance and Business Home and Garden Relationship Quizzes Cars & Other Vehicles Food and Entertaining Personal Care and Style Sports and Fitness Computers and Electronics Health Pets and Animals Travel Education & Communication Hobbies and Crafts Philosophy and Religion Work World Family Life Holidays and Traditions Relationships Youth
• Browse Articles
• Learn Something New
• Quizzes Hot
• Happiness Hub
• This Or That Game
• Train Your Brain
• Explore More
• Support wikiHow
• About wikiHow
• Log in / Sign up
• Education and Communications
• College University and Postgraduate
• Academic Writing

How to Write a Bibliography

Last Updated: September 7, 2024 References

This article was co-authored by Diane Stubbs . Diane Stubbs is a Secondary English Teacher with over 22 years of experience teaching all high school grade levels and AP courses. She specializes in secondary education, classroom management, and educational technology. Diane earned a Bachelor of Arts in English from the University of Delaware and a Master of Education from Wesley College. There are 16 references cited in this article, which can be found at the bottom of the page. This article has been viewed 679,339 times.

When you write a paper or a book, it's important to include a bibliography. A bibliography tells your reader what sources you've used. It lists all the books, articles, and other references you cited in or used to inform your work. Bibliographies are typically formatted according to one of three styles: American Psychological Association (APA) for scientific papers, Modern Language Association (MLA) for humanities papers, and Chicago Manual of Style (CMS) for the social sciences. Make sure you always check with your superior - whether a professor or boss - about which style they prefer.

Sample Bibliographies

Writing an APA Bibliography

• For example, if the author's name for a source is "John Adams Smith," you would list him as "Smith, J.A.," before listing the title of his piece.

• For example, if one source has twelve authors, and the seventh author is "Smith, J.A." and the twelfth is "Timothy, S.J.," you would list the first six authors, then write "Smith, J.A. ...Timothy, S.J."

• For example, if you have a World Health Organization Report without an author as one of your sources, you would write, "World Health Organization, "Report on Development Strategies in Developing Nations," July 1996."

• For example, an article citation might look like this: Jensen, O. E. (2012). "African Elephants." Savannah Quarterly , 2(1), 88.
• If the periodical the article comes from always begins with page number 1 (these types of periodicals are called “paginated by issue” periodicals, you should include the full page range of the article.
• If the article was retrieved online, end the citation with the words "Retrieved from" followed by the web address.

• Example: Worden, B. L. (1999). Echoing Eden. New York, New York: One Two Press.
• If the title is more than one word long and doesn’t contain any proper nouns, only the first word should be capitalized. Only the first letter of any subtitle should be capitalized as well.

• For example, a cited website might look like this: Quarry, R. R. (May 23, 2010). Wild Skies. Retrieved from https://wildskies.com.
• If no author is available, just start with the title. If no date is available, write "n.d."

Writing a MLA Bibliography

• You shouldn’t use an author’s title or degrees when listing their names in your bibliography. This is true even if they are listed that way on the source.

• For example, a book citation might look like this: Butler, Olivia. Parable of the Flower. Sacramento: Seed Press, 1996.

• For example, an article published in a scholarly journal might look like this: Green, Marsha. "Life in Costa Rica." Science Magazine vol. 1, no. 4, Mar 2013: 1-2.
• If you’re citing an article in a newspaper, you only need the name of the newspaper, followed by the date it was published, and the page number. A citation for that might look like this: Smith, Jennifer. “Tiny Tim Wins Award.” New York Times, 24 Dec 2017, p. A7.

• For example, a website citation might look like this: Jong, June. "How to Write an Essay." Writing Portal. 2 Aug. 2012. University of California. 23 Feb. 2013. <https://writingportal.com>
• Some websites, particularly academic ones, will have what’s called a DOI (digital object identifier). Write “doi:” in front of this number in place of the website’s url if a DOI is available.

Writing a CMS Bibliography

• Example: Skylar Marsh. "Walking on Water." Earth Magazine 4(2001): 23.

• For example, a book entry might look like this: Walter White. Space and Time . New York: London Press, 1982

• Example: University of California. "History of University of California." Last modified April 3, 2013. https://universityofcalifornia.com.
• Unless there is a publication date for the website you’re citing, you don’t need to include an access date. If you do have an access date, it goes at the end of the citation.

Expert Q&A

• Ask your teacher or professor which style they prefer you to use in your paper. Thanks Helpful 6 Not Helpful 2
• Be sure to include each and every source you reference in your work. Thanks Helpful 7 Not Helpful 5
• When writing a bibliography or a reference page, it really comes down to looking at an example and applying it to your own information. Thanks Helpful 0 Not Helpful 0

You Might Also Like

• ↑ https://libguides.reading.ac.uk/citing-references/compilingbibliography
• ↑ https://www.sciencebuddies.org/science-fair-projects/science-fair/writing-a-bibliography-apa-format
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa6_style/apa_formatting_and_style_guide/reference_list_author_authors.html
• ↑ https://libguides.umgc.edu/annotated-bibliography-apa
• ↑ hhttps://owl.purdue.edu/owl/research_and_citation/apa6_style/apa_formatting_and_style_guide/reference_list_author_authors.html
• ↑ Cite articles
• ↑ https://owl.purdue.edu/owl/research_and_citation/conducting_research/evaluating_sources_of_information/general_guidelines.html
• ↑ https://www.scribbr.com/mla/works-cited/
• ↑ https://owl.purdue.edu/owl/research_and_citation/mla_style/mla_formatting_and_style_guide/mla_works_cited_page_basic_format.html
• ↑ https://libguides.unf.edu/citationguide/samplemla
• ↑ https://nwtc.libanswers.com/faq/212923
• ↑ https://guides.library.unr.edu/mlacitation/articles
• ↑ https://hbl.gcc.libguides.com/research/credible
• ↑ https://camosun.libguides.com/Chicago-17thEd/bibliography
• ↑ https://www.chicagomanualofstyle.org/tools_citationguide/citation-guide-1.html

About This Article

To create an APA bibliography, title a separate page at the end of your paper "References." Then, use the authors' last names to organize your list alphabetically, for example by writing the author John Adam Smith as "Smith, J. A." If a source has more than 7 authors, list the first 7 before adding an ellipses. To cite an article, include the author's name, year of publication, article title, publication title, and page numbers. When citing a book, begin with the author's name, then the date of publication, title in Italics, location of the publisher, and publisher's name. For tips on how to write an MLA or CMS bibliography, keep reading! Did this summary help you? Yes No

• Send fan mail to authors

Reader Success Stories

Mar 11, 2023

Did this article help you?

Mar 12, 2020

Braden White

Oct 21, 2020

Oct 12, 2017

Savanna Brantley

Feb 12, 2021

Featured Articles

Trending Articles

Watch Articles

• Terms of Use
• Privacy Policy
• Do Not Sell or Share My Info
• Not Selling Info

Don’t miss out! Sign up for

wikiHow’s newsletter

How to Write a Bibliography for Assignments

Team Desklib

Published: 2022-09-24

Every written assignment must include a bibliography, which is just as important as the material itself. This phrase refers to a list of all the resources you used to complete a particular assignment.

These resources primarily fall under two categories:

Written down, such as in books, articles, reports, etc.

The majority of digital sources are found on the web.

Many students  find it difficult to finish the first, second, and third pages of their bibliography. Continue reading if you want to learn how to effectively compose a  Bibliography for a project  on any subject.

Every written assignment must include a bibliography, which is just as important as the material itself. This phrase refers to a list of all the resources you used to complete a particular assignment. These resources primarily fall under two categories:

The majority of digital sources are found on the web

Things to be noted while writing a Bibliography

A work's author should be credited using their full name;

Title in its entirety (for magazines, be sure to note the volume and number);

Date, location, and publication company (often, the city will suffice);

The name of the publishing house;

The page's border.

When using web sources, the following information is necessary

If there is a clear title, 

The name of the business that designed the website;

The date that you last used this source; 

Copy the URL in its entirety.

What is the Meaning of Bibliography 

A research paper may be required for several academic assignments. The chore of writing a paper for a school project can be challenging. You must keep track of the sources you utilize, whether you are writing for a college or high school audience, and cite them at the end of your paper. Your professor or you will determine the style of a reference list or bibliography you use for your academic project.

Better use end-to-end numbering when compiling a bibliographic list. Before you hit the submit button on your work, go over the basics and double-check that no sources were consulted. All sources must be cited in this manner.

Not sure about the proper order in which to list your sources? Generally, follow the accepted procedure. 

The official literature is the first to be cited in an academic publication. Therefore, the works by foreign authors ought to be removed. You should continue immediately to the native works in the other language.

The alphabet is your best buddy if one author uses a lot of sources.

Theses and term papers have no place in a bibliography. These are instructional pieces. The specific guidelines of a journal govern the sequence of links in a bibliography for academic articles. As a result, before turning in a paper, you should thoroughly research how to create a bibliography for an assignment using, for example, the MLA style.

Last but not least, remember that the bibliographic description includes crucial details about the document. Its presentation often adheres to a set of guidelines. Typically, the goal is the same: to identify and describe the document's general features in the bibliographic record.

Despite the intricacy, adhering to following general guidelines will help you succeed while creating bibliographies for your assignments. 

Understand the Bibliography Format 

You have completed your essay. Make an alphabetical list of all the books, magazines, and websites you used right now. This list is sometimes referred to as the bibliography. Get a sample of a bibliography in the MLA, APA, or Chicago styles because a bibliography example can be more persuasive than words. Then, educate yourself on the many kinds of bibliographies that are available and that you might utilize.

It can be complicated when it comes to bibliography examples. This is due to the fact that, in terms of writing styles, the word "bibliography" can have two different meanings.

A general term for all source listings in all writing styles is "bibliography." It also serves as the heading for the end citation in Chicago/Turabian. However, MLA and APA styles use reference lists rather than bibliographies in actuality. Following are the differences between each style: 

All the sources utilized to construct a piece of literature are included in the bibliography. Even if you didn't cite something in the writing itself, everything you used to create the work falls under this category. This may comprise background materials but need not be confined to them.

Only the sources that were specifically cited in the text of the essay or paper are listed in the references. These are genuine quotations and concepts that have been applied by other authors or materials.

Step-by-step Bibliography Writing

We have put together a thorough, step-by-step guide to help you better understand how to construct a bibliography for an assignment.

Choose your sources:     There aren't many things more crucial when it comes to academic tasks than sources. As a result, college students must become adept at conducting research and locating reliable sources. Here's an illustration for you. Let's say you are political science, security studies, or international relations major. On the other hand, the best strategy would be to search Scopus or Web of Science for the most reliable sources, such as the academic journals listed below: -   Security on a global scale; -   The world's affairs; -   Journal of American Political Science

Analyse Every Source:  Beyond having some seemingly excellent sources available, your primary duty while completing a bibliography goes beyond that. The task includes evaluating each and every one of them. Let's examine some typical traits of reliable sources: -   -  Find current publications, such as those that were released no earlier than 2011; -  The texts should, of course, be authored by reputable authors; -   Whenever a website is required, look for those of governmental and educational institutions; -   If you haven't already, look into the Google Scholar database as well as other academic databases.

Here are some indications that a source is not reliable for you:

Unqualified authors (those without academic degrees or institutional ties) have published texts;   avoid commercial websites to avoid blatantly biassed promotional content;

It is best to omit any texts that lack appropriate references;

Blog posts lack sufficient authority.

Examine the author's experience and credentials.

Lastly, you must be selective while choosing sources and writers if you want to create a stellar bibliography. Before adding a resource, please respond to the following questions at least twice:

Is the author authority in the subject matter of your research questions?

Are you and a certain researcher on any similar intellectual wavelengths? What school of thinking does this scientist represent?

Not everything will always function properly. However, these straightforward responses will enable you to select the appropriate writers to mention.

How to Cite Various Sources

You must follow specific guidelines while working on a variety of sources in order to create a stellar bibliography. You can learn how to cite someone for an assignment, regardless of the subject.

The bibliography item will closely mirror the one for a book if you use the one from the journal. Normally, mention the author's name and the article's title.

Name of the journal, volume, issue (sometimes, the year of publication is included), page range.

When you use evidence from one of your sources in your assignment, you will typically need to include a citation in the text of your paper (references). When you discuss or summarise an idea or piece of information in your either in your own words or a direct quote from that source.

Avoid using a lot of in-depth direct quotes. For direct quotations, even if your in-text citations are exact, these mostly indicate. You are able to point out a pertinent quotation to the reader. 

It is necessary to confirm the significance and intent of the quote after it has been used. transparent to your reader. How does the quotation help to make your point or support it?

The information you provide in your in-text reference must be sufficient for your reader to locate the complete specifics of the source of your evidence in your "List of References" (or "Bibliography").

The extent to which the information in your in-text citation will replicate the detail provided in the ‘List of References’ depends on the referencing system. Systems that use endnotes or footnotes typically provide more information about the entire source than Harvard in-text references that are enclosed in brackets. If a "brief direct quotation is given," Harvard often simply wants the author's last name and the date of publication, with page numbers provided. 

If you keep track of each book, encyclopedia, or article you use as you read and make notes, it will be simpler for you to create your final bibliography. Start a preliminary or draft bibliography by making a list of all your sources on a separate piece of paper. For each source, make a note of the whole title, author, publication location, publisher, and publication date.

List your sources (texts, articles, interviews, etc.) in alphabetical order by the last names of the writers when creating a final bibliography. Encyclopedias and movies are examples of sources without writers that should be arranged alphabetically by title. Use the format that your teacher likes if there are multiple options for bibliographies.

Final Take : 

You must include a specific list called a  bibliography for assignments  or in your essay whenever you refer to a book, magazine, or website. Even if you are only using the source to further your understanding of the subject without really quoting it, you still need to include it. You would just need to include the author's name and the source's publication date when citing the source in the text.

Additional information is required in your bibliography, where the citation about it will appear. The citation style and source type, though, would be important factors. Check out our guide if you're not familiar with the standards and the various citation formats.

Your Feedback matters

Scribbr Referencing Generator

Accurate Harvard, APA, MLA, and Chicago references, verified by experts, trusted by millions.

Reference sources in seconds with Autocite

Look up your source by its title, URL, ISBN, or DOI, and let Scribbr do the rest! The reference generator will automatically find all the necessary information to generate a perfect reference, including the author(s), publication date, and publisher.

Perfectly formatted references every time

Inaccurate references can cost you points on your assignments, so our seasoned referencing experts have invested countless hours in perfecting Scribbr’s reference generator algorithms. We’re proud to be recommended by teachers and universities across the UK.

Enjoy a referencing generator without flashy ads

Staying focused is already difficult enough, so unlike other reference generators, Scribbr won’t slow you down with flashing banner ads and video pop-ups. That’s a promise!

Citation Generator features you'll love

Look up your source by its title, URL, ISBN, or DOI, and let Scribbr find and fill in all the relevant information automatically.

Harvard, APA, MLA, Chicago

Generate flawless references according to the official Harvard , APA , MLA, or Chicago style rules. More referencing styles will be available soon!

Export to Word

When your reference list is complete, export it to Word. We’ll apply the official formatting guidelines automatically.

Lists and folders

Create separate reference lists for each of your assignments to stay organized. You can also group related lists into folders.

Export to Bib(La)TeX

Are you using a LaTex editor like Overleaf? If so, you can easily export your references in Bib(La)TeX format with a single click.

Custom fonts

Change the typeface used for your reference list to match the rest of your document. Options include Times New Roman, Arial, and Calibri.

Industry-standard technology

Scribbr’s Referencing Generator is built using the same citation software (CSL) as Mendeley and Zotero, but with an added layer for improved accuracy.

Annotations

Describe or evaluate your sources in annotations, and Scribbr will generate a perfectly formatted annotated bibliography.

Referencing guides

Scribbr’s popular guides and videos will help you understand everything related to finding, evaluating, and referencing sources.

Secure backup

Your work is saved automatically after every change and stored securely in your Scribbr account.

• Introduction
• Finding sources

Evaluating sources

• Integrating sources

Referencing sources

Tools and resources, a quick guide to working with sources.

Working with sources is an important skill that you’ll need throughout your academic career.

It includes knowing how to find relevant sources, assessing their authority and credibility, and understanding how to integrate sources into your work with proper referencing.

This quick guide will help you get started!

Finding relevant sources

Sources commonly used in academic writing include academic journals, scholarly books, websites, newspapers, and encyclopedias. There are three main places to look for such sources:

• Research databases: Databases can be general or subject-specific. To get started, check out this list of databases by academic discipline . Another good starting point is Google Scholar .
• Your institution’s library: Use your library’s database to narrow down your search using keywords to find relevant articles, books, and newspapers matching your topic.
• Other online resources: Consult popular online sources like websites, blogs, or Wikipedia to find background information. Be sure to carefully evaluate the credibility of those online sources.

When using academic databases or search engines, you can use Boolean operators to refine your results.

Generate Harvard, APA, MLA, and Chicago style references in seconds

Get started

In academic writing, your sources should be credible, up to date, and relevant to your research topic. Useful approaches to evaluating sources include the CRAAP test and lateral reading.

CRAAP is an abbreviation that reminds you of a set of questions to ask yourself when evaluating information.

• Currency: Does the source reflect recent research?
• Relevance: Is the source related to your research topic?
• Authority: Is it a respected publication? Is the author an expert in their field?
• Accuracy: Does the source support its arguments and conclusions with evidence?
• Purpose: What is the author’s intention?

Lateral reading

Lateral reading means comparing your source to other sources. This allows you to:

• Verify evidence
• Contextualize information
• Find potential weaknesses

If a source is using methods or drawing conclusions that are incompatible with other research in its field, it may not be reliable.

Integrating sources into your work

Once you have found information that you want to include in your paper, signal phrases can help you to introduce it. Here are a few examples:

Following the signal phrase, you can choose to quote, paraphrase or summarize the source.

• Quoting : This means including the exact words of another source in your paper. The quoted text must be enclosed in quotation marks or (for longer quotes) presented as a block quote . Quote a source when the meaning is difficult to convey in different words or when you want to analyze the language itself.
• Paraphrasing: This means putting another person’s ideas into your own words. It allows you to integrate sources more smoothly into your text, maintaining a consistent voice. It also shows that you have understood the meaning of the source.
• Summarizing : This means giving an overview of the essential points of a source. Summaries should be much shorter than the original text. You should describe the key points in your own words and not quote from the original text.

Whenever you quote, paraphrase, or summarize a source, you must include a citation crediting the original author.

Referencing your sources is important because it:

• Allows you to avoid plagiarism
• Establishes the credentials of your sources
• Backs up your arguments with evidence
• Allows your reader to verify the legitimacy of your conclusions

The most common citation styles in the UK are APA, MLA, Harvard, Vancouver, MHRA, and Oscola. Each citation style has specific rules for formatting citations.

Scribbr’s free Reference Generator can generate perfect references and in-text citations in both APA and MLA styles. More citation styles will be available soon!

Scribbr and partners offer tons of tools and resources to make working with sources easier and faster. Take a look at our top picks:

• Reference Generator: Automatically generate Harvard and APA references .
• Plagiarism Checker : Detect plagiarism in your paper using the most accurate Turnitin-powered plagiarism software available to students.
• Proofreading services : Have a human editor improve your writing.
• Knowledge Base : Explore hundreds of articles, bite-sized videos, time-saving templates, and handy checklists that guide you through the process of research, writing, and citation.

• Utility Menu

fa3d988da6f218669ec27d6b6019a0cd

A publication of the harvard college writing program.

Harvard Guide to Using Sources 

• The Honor Code
• Bibliography

If you are using Chicago style footnotes or endnotes, you should include a bibliography at the end of your paper that provides complete citation information for all of the sources you cite in your paper. Bibliography entries are formatted differently from notes. For bibliography entries, you list the sources alphabetically by last name, so you will list the last name of the author or creator first in each entry. You should single-space within a bibliography entry and double-space between them. When an entry goes longer than one line, use a hanging indent of .5 inches for subsequent lines. Here’s a link to a sample bibliography that shows layout and spacing . You can find a sample of note format here .

Complete note vs. shortened note

Here’s an example of a complete note and a shortened version of a note for a book:

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35.

1. Karen Ho, Liquidated , 27-35.

Note vs. Bibliography entry

The bibliography entry that corresponds with each note is very similar to the longer version of the note, except that the author’s last and first name are reversed in the bibliography entry. To see differences between note and bibliography entries for different types of sources, check this section of the Chicago Manual of Style .

For Liquidated , the bibliography entry would look like this:

Ho, Karen, Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009.

Citing a source with two or three authors

If you are citing a source with two or three authors, list their names in your note in the order they appear in the original source. In the bibliography, invert only the name of the first author and use “and” before the last named author.

1. Melissa Borja and Jacob Gibson, “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees,” The Review of Faith & International Affairs 17, no. 3 (2019): 80-81, https://doi.org/10.1080/15570274.2019.1643983 .

Shortened note:

1. Borja and Gibson, “Internationalism with Evangelical Characteristics,” 80-81.

Bibliography:

Borja, Melissa, and Jacob Gibson. “Internationalism with Evangelical Characteristics: The Case of Evangelical Responses to Southeast Asian Refugees.” The Review of Faith & International Affairs 17. no. 3 (2019): 80–93. https://doi.org/10.1080/15570274.2019.1643983 .

Citing a source with more than three authors

If you are citing a source with more than three authors, include all of them in the bibliography, but only include the first one in the note, followed by et al. ( et al. is the shortened form of the Latin et alia , which means “and others”).

1. Justine M. Nagurney, et al., “Risk Factors for Disability After Emergency Department Discharge in Older Adults,” Academic Emergency Medicine 27, no. 12 (2020): 1271.

Short version of note:

1. Justine M. Nagurney, et al., “Risk Factors for Disability,” 1271.

Nagurney, Justine M., Ling Han, Linda Leo‐Summers, Heather G. Allore, Thomas M. Gill, and Ula Hwang. “Risk Factors for Disability After Emergency Department Discharge in Older Adults.” Academic Emergency Medicine 27, no. 12 (2020): 1270–78. https://doi.org/10.1111/acem.14088 .

Citing a book consulted online

If you are citing a book you consulted online, you should include a URL, DOI, or the name of the database where you found the book.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), 27-35, https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Bibliography entry:

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. https://doi-org.ezp-prod1.hul.harvard.edu/10.1215/9780822391371 .

Citing an e-book consulted outside of a database

If you are citing an e-book that you accessed outside of a database, you should indicate the format. If you read the book in a format without fixed page numbers (like Kindle, for example), you should not include the page numbers that you saw as you read. Instead, include chapter or section numbers, if possible.

1. Karen Ho, Liquidated: An Ethnography of Wall Street (Durham: Duke University Press, 2009), chap. 2, Kindle.

Ho, Karen. Liquidated: An Ethnography of Wall Street . Durham: Duke University Press, 2009. Kindle.

• Citation Management Tools
• In-Text Citations
• Examples of Commonly Cited Sources
• Frequently Asked Questions about Citing Sources in Chicago Format
• Sample Bibliography

PDFs for This Section

• Citing Sources
• Online Library and Citation Tools

Have a language expert improve your writing

Run a free plagiarism check in 10 minutes, generate accurate citations for free.

• Knowledge Base
• Citing sources

How to Cite Sources | Citation Generator & Quick Guide

Citing your sources is essential in  academic writing . Whenever you quote or paraphrase a source (such as a book, article, or webpage), you have to include a  citation crediting the original author.

Failing to properly cite your sources counts as plagiarism , since you’re presenting someone else’s ideas as if they were your own.

The most commonly used citation styles are APA and MLA. The free Scribbr Citation Generator is the quickest way to cite sources in these styles. Simply enter the URL, DOI, or title, and we’ll generate an accurate, correctly formatted citation.

Generate accurate citations with Scribbr

Instantly correct all language mistakes in your text.

Upload your document to correct all your mistakes in minutes

Table of contents

When do you need to cite sources, which citation style should you use, in-text citations, reference lists and bibliographies.

Scribbr Citation Generator

Other useful citation tools

Citation examples and full guides, frequently asked questions about citing sources.

Citations are required in all types of academic texts. They are needed for several reasons:

• To avoid plagiarism by indicating when you’re taking information from another source
• To give proper credit to the author of that source
• To allow the reader to consult your sources for themselves

A citation is needed whenever you integrate a source into your writing. This usually means quoting or paraphrasing:

• To quote a source , copy a short piece of text word for word and put it inside quotation marks .
• To paraphrase a source , put the text into your own words. It’s important that the paraphrase is not too close to the original wording. You can use the paraphrasing tool if you don’t want to do this manually.

Citations are needed whether you quote or paraphrase, and whatever type of source you use. As well as citing scholarly sources like books and journal articles, don’t forget to include citations for any other sources you use for ideas, examples, or evidence. That includes websites, YouTube videos , and lectures .

Don't submit your assignments before you do this

The academic proofreading tool has been trained on 1000s of academic texts. Making it the most accurate and reliable proofreading tool for students. Free citation check included.

Try for free

Usually, your institution (or the journal you’re submitting to) will require you to follow a specific citation style, so check your guidelines or ask your instructor.

In some cases, you may have to choose a citation style for yourself. Make sure to pick one style and use it consistently:

• APA Style is widely used in the social sciences and beyond.
• MLA style is common in the humanities.
• Chicago notes and bibliography , common in the humanities
• Chicago author-date , used in the (social) sciences
• There are many other citation styles for different disciplines.

If in doubt, check with your instructor or read other papers from your field of study to see what style they follow.

In most styles, your citations consist of:

• Brief in-text citations at the relevant points in the text
• A reference list or bibliography containing full information on all the sources you’ve cited

In-text citations most commonly take the form of parenthetical citations featuring the last name of the source’s author and its year of publication (aka author-date citations).

An alternative to this type of in-text citation is the system used in numerical citation styles , where a number is inserted into the text, corresponding to an entry in a numbered reference list.

There are also note citation styles , where you place your citations in either footnotes or endnotes . Since they’re not embedded in the text itself, these citations can provide more detail and sometimes aren’t accompanied by a full reference list or bibliography.

A reference list (aka “Bibliography” or “Works Cited,” depending on the style) is where you provide full information on each of the sources you’ve cited in the text. It appears at the end of your paper, usually with a hanging indent applied to each entry.

The information included in reference entries is broadly similar, whatever citation style you’re using. For each source, you’ll typically include the:

• Author name
• Publication date
• Container (e.g., the book an essay was published in, the journal an article appeared in)
• Location (e.g., a URL or DOI , or sometimes a physical location)

The exact information included varies depending on the source type and the citation style. The order in which the information appears, and how you format it (e.g., capitalization, use of italics) also varies.

Most commonly, the entries in your reference list are alphabetized by author name. This allows the reader to easily find the relevant entry based on the author name in your in-text citation.

In numerical citation styles, the entries in your reference list are numbered, usually based on the order in which you cite them. The reader finds the right entry based on the number that appears in the text.

Prevent plagiarism. Run a free check.

Because each style has many small differences regarding things like italicization, capitalization , and punctuation , it can be difficult to get every detail right. Using a citation generator can save you a lot of time and effort.

Scribbr offers citation generators for both APA and MLA style. Both are quick, easy to use, and 100% free, with no ads and no registration required.

Just input a URL or DOI or add the source details manually, and the generator will automatically produce an in-text citation and reference entry in the correct format. You can save your reference list as you go and download it when you’re done, and even add annotations for an annotated bibliography .

Once you’ve prepared your citations, you might still be unsure if they’re correct and if you’ve used them appropriately in your text. This is where Scribbr’s other citation tools and services may come in handy:

Plagiarism Checker

Citation Checker

Citation Editing

Plagiarism means passing off someone else’s words or ideas as your own. It’s a serious offense in academia. Universities use plagiarism checking software to scan your paper and identify any similarities to other texts.

When you’re dealing with a lot of sources, it’s easy to make mistakes that could constitute accidental plagiarism. For example, you might forget to add a citation after a quote, or paraphrase a source in a way that’s too close to the original text.

Using a plagiarism checker yourself before you submit your work can help you spot these mistakes before they get you in trouble. Based on the results, you can add any missing citations and rephrase your text where necessary.

Try out the Scribbr Plagiarism Checker for free, or check out our detailed comparison of the best plagiarism checkers available online.

Scribbr Plagiarism Checker

Scribbr’s Citation Checker is a unique AI-powered tool that automatically detects stylistic errors and inconsistencies in your in-text citations. It also suggests a correction for every mistake.

Currently available for APA Style, this is the fastest and easiest way to make sure you’ve formatted your citations correctly. You can try out the tool for free below.

If you need extra help with your reference list, we also offer a more in-depth Citation Editing Service.

Our experts cross-check your in-text citations and reference entries, make sure you’ve included the correct information for each source, and improve the formatting of your reference page.

If you want to handle your citations yourself, Scribbr’s free Knowledge Base provides clear, accurate guidance on every aspect of citation. You can see citation examples for a variety of common source types below:

And you can check out our comprehensive guides to the most popular citation styles:

At college level, you must properly cite your sources in all essays , research papers , and other academic texts (except exams and in-class exercises).

Add a citation whenever you quote , paraphrase , or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.

The exact format of your citations depends on which citation style you are instructed to use. The most common styles are APA , MLA , and Chicago .

The abbreviation “ et al. ” (Latin for “and others”) is used to shorten citations of sources with multiple authors.

“Et al.” is used in APA in-text citations of sources with 3+ authors, e.g. (Smith et al., 2019). It is not used in APA reference entries .

Use “et al.” for 3+ authors in MLA in-text citations and Works Cited entries.

Use “et al.” for 4+ authors in a Chicago in-text citation , and for 10+ authors in a Chicago bibliography entry.

The Scribbr Citation Generator is developed using the open-source Citation Style Language (CSL) project and Frank Bennett’s citeproc-js . It’s the same technology used by dozens of other popular citation tools, including Mendeley and Zotero.

You can find all the citation styles and locales used in the Scribbr Citation Generator in our publicly accessible repository on Github .

APA format is widely used by professionals, researchers, and students in the social and behavioral sciences, including fields like education, psychology, and business.

Be sure to check the guidelines of your university or the journal you want to be published in to double-check which style you should be using.

MLA Style  is the second most used citation style (after APA ). It is mainly used by students and researchers in humanities fields such as literature, languages, and philosophy.

Is this article helpful?

Other students also liked.

• Citation Styles Guide | Examples for All Major Styles
• APA vs. MLA | The Key Differences in Format & Citation
• The Basics of In-Text Citation | APA & MLA Examples

More interesting articles

• Citation examples for common sources types
• Et Al. | Meaning & Use in APA, MLA & Chicago
• Hanging Indent | Word & Google Docs Instructions
• How to Cite a Book | APA, MLA, & Chicago Examples
• How to Cite a Journal Article | APA, MLA, & Chicago Examples
• How to Cite a Lecture | APA, MLA & Chicago Examples
• How to Cite a Newspaper Article | MLA, APA & Chicago
• How to Cite a Website | MLA, APA & Chicago Examples
• How to Cite a Wikipedia Article | APA, MLA & Chicago
• How to Cite a YouTube Video | MLA, APA & Chicago
• How to Cite an Image | Photographs, Figures, Diagrams
• How to Cite an Interview | APA, MLA & Chicago Style
• Parenthetical Citation | APA, MLA & Chicago Examples
• What Are Endnotes? | Guide with Examples
• What Are Footnotes? | Guide with Word Instructions
• What Does Ibid. Mean? | Definition & Examples
• What is a DOI? | Finding and Using Digital Object Identifiers
• What Is an Annotated Bibliography? | Examples & Format

Scribbr APA Citation Checker

An innovative new tool that checks your APA citations with AI software. Say goodbye to inaccurate citations!

Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Annotated Bibliography Samples

Welcome to the Purdue OWL

This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.

Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.

Below you will find sample annotations from annotated bibliographies, each with a different research project. Remember that the annotations you include in your own bibliography should reflect your research project and/or the guidelines of your assignment.

As mentioned elsewhere in this resource, depending on the purpose of your bibliography, some annotations may summarize, some may assess or evaluate a source, and some may reflect on the source’s possible uses for the project at hand. Some annotations may address all three of these steps. Consider the purpose of your annotated bibliography and/or your instructor’s directions when deciding how much information to include in your annotations.

Please keep in mind that all your text, including the write-up beneath the citation, must be indented so that the author's last name is the only text that is flush left.

Sample MLA Annotation

Lamott, Anne. Bird by Bird: Some Instructions on Writing and Life . Anchor Books, 1995.

Lamott's book offers honest advice on the nature of a writing life, complete with its insecurities and failures. Taking a humorous approach to the realities of being a writer, the chapters in Lamott's book are wry and anecdotal and offer advice on everything from plot development to jealousy, from perfectionism to struggling with one's own internal critic.

In the process, Lamott includes writing exercises designed to be both productive and fun. Lamott offers sane advice for those struggling with the anxieties of writing, but her main project seems to be offering the reader a reality check regarding writing, publishing, and struggling with one's own imperfect humanity in the process. Rather than a practical handbook to producing and/or publishing, this text is indispensable because of its honest perspective, its down-to-earth humor, and its encouraging approach.

Chapters in this text could easily be included in the curriculum for a writing class. Several of the chapters in Part 1 address the writing process and would serve to generate discussion on students' own drafting and revising processes. Some of the writing exercises would also be appropriate for generating classroom writing exercises. Students should find Lamott's style both engaging and enjoyable.

In the sample annotation above, the writer includes three paragraphs: a summary, an evaluation of the text, and a reflection on its applicability to his/her own research, respectively.

For information on formatting MLA citations, see our MLA 9th Edition (2021) Formatting and Style Guide .

Sample APA Annotation

Ehrenreich, B. (2001). Nickel and dimed: On (not) getting by in America . Henry Holt and Company.

In this book of nonfiction based on the journalist's experiential research, Ehrenreich attempts to ascertain whether it is currently possible for an individual to live on a minimum-wage in America. Taking jobs as a waitress, a maid in a cleaning service, and a Walmart sales employee, the author summarizes and reflects on her work, her relationships with fellow workers, and her financial struggles in each situation.

An experienced journalist, Ehrenreich is aware of the limitations of her experiment and the ethical implications of her experiential research tactics and reflects on these issues in the text. The author is forthcoming about her methods and supplements her experiences with scholarly research on her places of employment, the economy, and the rising cost of living in America. Ehrenreich’s project is timely, descriptive, and well-researched.

The annotation above both summarizes and assesses the book in the citation. The first paragraph provides a brief summary of the author's project in the book, covering the main points of the work. The second paragraph points out the project’s strengths and evaluates its methods and presentation. This particular annotation does not reflect on the source’s potential importance or usefulness for this person’s own research.

For information on formatting APA citations, see our APA Formatting and Style Guide .

Sample Chicago Manual of Style Annotation

Davidson, Hilda Ellis. Roles of the Northern Goddess . London: Routledge, 1998.

Davidson's book provides a thorough examination of the major roles filled by the numerous pagan goddesses of Northern Europe in everyday life, including their roles in hunting, agriculture, domestic arts like weaving, the household, and death. The author discusses relevant archaeological evidence, patterns of symbol and ritual, and previous research. The book includes a number of black and white photographs of relevant artifacts.

This annotation includes only one paragraph, a summary of the book. It provides a concise description of the project and the book's project and its major features.

For information on formatting Chicago Style citations, see our Chicago Manual of Style resources.

How to Write Bibliography for Assignment: Best Tips for Students

Table of Contents

What Is A Bibliography?

Why are bibliographies needed, how to write a bibliography for an assignment, example of a bibliography for an assignment, annotated bibliographies.

Bibliographies are generally not the easiest or most fun writing tasks, but they are necessary, so it’s important to get them right!  Read on, to find out ‘how to make bibliography’!

A bibliography is an alphabetized list of resources (e.g., books, journals, articles, websites, images, movies, newspapers, videos) used in the creation of an academic assignment. A bibliography will include resources you have cited within the assignment as well as resources that you used to help your general understanding of the assignment topic (background sources). A bibliography differs from a reference page for an assignment as a reference page (or reference list) only includes cited resources. Ask about help at our assignment writing service AssignmenBro. Our expert writers can help you solve any difficulty task.

Most bibliographies appear on a separate numbered page, use double line spacing, a clear, traditional font, such as times new roman   (font size 11-12), and include the following:

• A centred heading ‘Bibliography’.
• The creators’ names
• The titles of the resources
• The publishers’ names
• The publication years/dates
• The date accessed (for online documents and websites)

Bibliographies do not necessarily list the resource information in this order and different citation styles may have different requirements as regards line spacing and whether a hanging indent* is required Furthermore, additional information such as page numbers, the location of publication, issue numbers, and volume numbers may be required.

*Text in the bibliography entry is indented (excluding the first line). 

Also our assignment writing service can help not only with bibliography, but also we can do law assignment , help with science homework , math assignment, etc.

The purpose of a bibliography is to enable a reader to locate the resources used, to find out more information on the topic if they desire, and to acknowledge the work of others. If you fail to accurately acknowledge the work of others in your bibliography or reference list, you are claiming it to be yours and you can face the consequences of plagiarism investigattions. Thus, although a bibliography may be boring and seem unimportant, they are an essential part of your assignment.

There are five main styles of bibliography that also have different editions e.g., APA 5th, APA 6th, and APA 7th.  Referencing in an assignment is tricky, and you will need to ensure you have included an in-text citation (citation in the assignment) for any resources you directly copied or paraphrased information from.  Your educational instructor can tell you which type of citation style and edition you are required to use if you are unsure but provided below are the most up-to-date editions for each main citation style. The following recommendations are intended as a basic guide only:

APA 7th edition requires the creator’s name, date of publication, title, then publisher. Do not forget about the hanging indent if there is more than one line:

Hamilton, S. (2001). Indian Philosophy: A Very Short Introduction . Oxford Paperbacks.

Website entry in APA 7th:

Ruhl, C. (2021, June 29). Montessori Method of Education | Simply Psychology . www.simplypsychology.org. https://www.simplypsychology.org/montessori-method-of-education.html

MLA 9 th edition needs the creator’s name, title, publisher, then date of publication and a hanging indent:

Katz, Mark. Groove Music. The Art And Culture Of The Hip-Hip DJ . Oxford University Press, 2012.

Website entry in MLA 9 th :

Ruhl, Charlotte. “Montessori Method of Education | Simply Psychology.” www.simplypsychology.org , 29 June 2021, www.simplypsychology.org/montessori-method-of-education.html.

Harvard Citation style includes the creator’s name, date of publication, title, then publisher:

Burg, D., 2005. Encyclopedia of student and youth movements . New York: Facts on File.

Website entry in Harvard citation style:

Ruhl, C. (2021). Montessori Method of Education | Simply Psychology . [online] www.simplypsychology.org. Available at: https://www.simplypsychology.org/montessori-method-of-education.html [Accessed 28 Nov. 2021].

Turabian citation style lists the author, title, publisher, then date of publication and a hanging indent:

Dianne Berkell Zager, Autism Spectrum Disorders Mahwah, N.J.: Lawrence Erlbaum Associates, 2005.

Your Bibliography: 

Berkell Zager, Dianne. Autism Spectrum Disorders . Mahwah, N.J.: Lawrence Erlbaum Associates, 2005.

Website entry in Turabian citation style:

Ruhl, Charlotte. 2021. “Montessori Method of Education | Simply Psychology.” www.simplypsychology.org. June 29, 2021. https://www.simplypsychology.org/montessori-method-of-education.html.

Chicago citation style begins each entry with the author’s name, date of publication , then the title of the resource, followed by the publisher and a hanging indent:

Symons, Michael. 2021. “A History Of Cooks And Cooking (The Food Series)”.  Abebooks.Com.         https://www.abebooks.com/9780252071928/History-Cooks-Cooking-Food-Series -0252071921/plp.

Website entry in Chicago citation style:

You can write bibliographies manually, but you may find it easier to use an online citation generator, many of which are free.  However, these are not failproof and none are 100% accurate all the time so be sure to enter the information accurately and skim read over each entry after it has been generated.

Find the writer according to your requirements

• AssignmentBro is a team of experienced writers in any field of academic research
• We thoroughly choose writers with advanced multistep selection process
• Our writers work according to the highest academic standards

To help you gain a better idea of what a completed bibliography may look like, here’s one of the most common types in the most recent edition (APA 7th):

If you are requested to provide an annotated bibliography, then you will need to include a descriptive summary of each resource (around 150 words) under each bibliography entry.

Bibliographies are complex but are often a requirement in academic writing. Ensure you know exactly which style and edition are used by your educational establishment, then find an online citation generator to help you. Be sure to double-check each generated entry and don’t forget the in-text citation (reference in an assignment) for each bibliography entry you have copied or paraphrased. AssignmentBro – solve any assignment for college students.

What is an Assignment Plan? In simple terms, an assignment plan is what helps college and university students come up with a clear outline and preparation before they start writing. Even...

What is an Assignment Plan? In simple terms, an assignment plan is...

What Is the Cover Page of an Assignment Without a doubt, if you have already written at least one college assignment, the chances are high that you know a bit about the rules of composing...

What Is the Cover Page of an Assignment Without a doubt, if you have...

How to Write An Introduction For Essay It all comes down to the purpose of your introduction. It will either catch your reader's interest or make them feel confused. Your introduction...

How to Write An Introduction For Essay It all comes down to the...

Over 1000 students entrusted Bro

We use cookies to give you the best experience possible. By continuing we’ll assume you board with our cookie policy .

How to Write Bibliography for Assignment: Tips on Working with Your Sources

The most tedious and time-consuming part of any school or college written assignment is the bibliography. Sometimes, it can even be challenging! For example, if you’re confused by the variety of citation styles. That is why Custom-Writing experts prepared a brief guide about creating a perfect bibliography for a project. Some tips regarding the formatting are also included!

First of all, you shouldn’t be worried about how to write this dreadful part of your assignment. A bibliography is just a list of all the sources, such as books and articles, that you have used for creating your project. No matter how short your writing task is, you will most likely need to add a list of references.

📍 What Is a Bibliography?

• 👣 Writing Steps
• 📑 Referring to Different Sources

🔨 Reference Generators

🔗 references.

Every time you use a book, magazine, or a webpage for your essay , you need to mention it in a special list called a bibliography. Even if you are not quoting the source but just using it for the general understanding of the topic, you should still include it there. For citing the source in the text , you would only need to write the author’s name and the publication date. Then, the reference about it goes into your bibliography, and that’s where extra information is needed. However, it would depend on the type of source and the citation style. In case you’re not familiar with the variety of the citation styles and the requirements, have a look at our guide , which can save you some time!

Most of the time, your teacher would request to collect at least three printed sources, so try not to rely on the Internet solely.

👣 How to Write a Bibliography Step by Step

Now you know what a bibliography is. It is time to learn how to write it! We assure you: there is nothing complicated. Follow the steps below.

Select the Sources

The first thing you need to do is find the proper sources for your research assignment. When selecting the sources, you should consider the questions below.

Evaluate Each Source

The next step in writing a bibliography is a brief assessment of each source’s importance.

In case you need a bibliography as part of an assignment, you should identify the reason why and the way how you want to use the source. If you’re assigned to write an annotated bibliography as an independent project, examine the source’s contribution to the research area.

By the way, you may want to use the following questions for sources assessment.

Assess the Author’s Background and Credentials

When writing a bibliography for a project, you may need to examine the author’s credentials and experience. Here are some questions to help you.

Write a Summary for Each Source

Look through the following questions that will guide you. And don’t forget to search for the summarizing paragraphs. You may find them at the beginning or conclusion of each section. If there is none or you aren’t satisfied with its contents, you can take the role of a summary typer yourself and create your own custom summary.

Make a Proper Bibliography

Well, you’re almost there. You’ve evaluated your sources, took short notes, wrote an outline for each reference.

Use your notes and write your bibliography. How?

📑 How to Refer to Different Sources

You will have to use different writing patterns for different sources. Check these guidelines for bibliography writing:

• Book with one author: Author’s last name, first name. Title of the book. City: Publisher, Date of Publication.

Jones, Edward. The Toy. New York: Random House, 1987.

• Book with two authors: Author’s last name, first name, and second author’s full name. Title of the book. Place of publication: Publisher, date of publication.

Jones, Edward and Amelia Smith. Strangers. New York: Random House, 1987.

• Book without an author: Title of the book. City: Publisher, Date of Publication.

Old Lake. New York: Random House, 1987.

• Article in a book without an author: Name of the article. Title of the book. City: Publisher, Date of Publication.

Swans. Flora and Fauna. New York: Random House, 1987.

• Book with an editor: Editor’s last name, first name, ed. Title of the book. Place of publication: Publisher, date of publication.

Jones, Edward. 100 Recipes for You. New York: Random House, 1987.

• Short story or chapter of a book: Author’s last name, first name. “Title.” Title of the book that the source comes from. Editor (ed.) of the book’s full name. Place of publication: Publisher, date of publication. Pages of the source.

Jones, Edward. “Learning to communicate.” The Toy. Ed. Helen Stevenson. New York: Random House, 1987.

• Encyclopedia article with an author/a signed article: Author’s last name, first name. “Title”. Encyclopedia Title. Volume Number. Place of publication: Publisher, date of publication.

Jones, Edward. “The Wild Swans.” World Book Encyclopedia. Volume 13. New York: Random House, 1987.

• Encyclopedia article without an author/an unsigned article: “Title”. Encyclopedia Title. Volume number. Place of publication: Publisher, date of publication.

“The Wild Swans.” World Book Encyclopedia. Volume 13. New York: Random House, 1987.

• Journal article: Author’s last name, first name “Article Title.” Name volume number:issue number (year of publication): page numbers.

Jones, Edward, “The Wild Swans.” Flora and Fauna 15:1, (2007): 8-11.

• Magazine article: Author’s last name, first name. “Article title.” Magazine title date of publication: page numbers.

Jones, Edward. “Never been kissed” Us Sept 23, 2002: 221-2.

• Newspaper article: Author’s last name, first name. “Article title.” Newspaper title [city of publication, if not in title] date of publication, edition if necessary: section if necessary: page numbers.

Jones, Edward. “Handbags are Health Hazard.” Daily News [New York] Oct 31 2002: 26.

• Interview: Full name (last name first). Occupation. Date of interview.

Jones, Edward. Writer. February 10, 2006.

• Film: Title, Director, Distributor, Year.

Titanic, Dir. James Cameron, 20th Century Fox, 1998

• Email message: Author of message, (Date). Subject of message. Electronic conference or bulletin board (Online). Available email: LISTSERV@ email address.

Edward Jones, (May 23, 2006). New Winners. Teen Booklist (Online). Edward [email protected]

• Web page: URL (Uniform Resource Locator or WWW address). Author (or item’s name, if mentioned), date.

(Boston Globe’s www address) https://www.boston.com/. Today’s News, May 23, 2006.

Nobody wants to do routine work. So you may want to use a citation builder for your assignment. Try one of the source-generating apps or websites below!

By the way,

Have you checked our citation guidelines already?

✏️ Bibliography FAQ

A preliminary bibliography is basically the draft of all the sources you think might help your research. You create it when you are still not too familiar with the topic and scanning all the sources available. It’s not the final version of your bibliography since you might find some of the books not as useful as you thought and never use them.

A bibliography card is used to make the process of gathering and categorizing the sources easier. It’s a small piece of paper the size of a standard sticky note. You would take a new one every time you find a useful source. There you need to mention all the information for later referencing. On the back, you can write a brief summary.

Writing a bibliography for a science project is usually no different from creating one for other assignments. It’s a list of the sources the student uses for completing their task. Every source mentioned in the bibliography needs to have some specific publication information as well.

First of all, you need to make sure that your bibliography follows the citation style you are required to use. Otherwise, it will not be alphabetized correctly. Then, if you’re using the MS word program or a similar one, it’s easy to alphabetize your list by choosing the option “Sort.”

• Bibliography Definition by Cambridge English Dictionary
• American Psychological Association Style
• The Chicago Manual of Style Online
• Information on DOI (digital object identifier)
• Free DOI Lookup at Crossref
• Writing a Bibliography as a Part of Research Paper
• Evaluating Bibliographic Citations // Purdue Writing Lab
• The Annotated Bibliography – Cornell
• Bibliography – National Library of Medicine – NIH
• Share to Facebook
• Share to LinkedIn
• Share to email

An appendix is the part of the paper that contains supplementary material. The information from an appendix in paper writing is not essential. If the readers ignore this part, they still have to get the paper’s idea. Appendices help the readers to understand the research better. They might be useful...

Writing an abstract is one of the skills you need to master to succeed in your studies. An abstract is a summary of an academic text. It contains information about the aims and the outcomes of the research. The primary purpose of an abstract is to help readers understand what...

So you have to write a literature review. You find your favorite novel and then start analyzing it. This is how it’s usually done, right? It’s not. You have to learn the elements of literature review and how to deal with them.

A research proposal is a text that suggests a topic or research problem, justifies the need to study it, and describes the ways and methods of conducting the study. Scholars usually write proposals to get funding for their research. In their turn, students might have to do that to get...

It’s longer than your Bachelor’s thesis. It’s more stressful. It’s more important. And you have no clue how to write it. We understand that a lot comes with the responsibility of creating a Master’s thesis from scratch. But no need to stress out; you can get all the help you...

Students struggle with academic writing rules. Mastering them takes longer than writing the paper. But when the conventions become a normal state of things, the process becomes faster and easier than before. The less you think about the form, the more time you have to think about the contents.

Few students fully get the meaning and the importance of a research proposal. If you have a good research proposal, it means that you are going to carry out adequate research. A low-quality research proposal may be the reason your research will never start.

A lab report is quite a serious piece of paper that has a massive value in your research. And don’t be deceived by the name as the lab report is not a form you just need to fill in. There is an impressive list of components you need to describe...

A literature review is an update on the status of current research related to the issue in question. Its purpose is to provide the reader with a guide to a particular research topic. And for the writer, a well-written literature review is the best way to show their competence in...

A research proposal is a document that aims to show the significance and value of a particular project. It is common to have to write research proposals to acquire funding for various research projects. But that’s not all. Perhaps the most important function of a research proposal is that it...

Are you tired of getting average grades for your term papers? Well, that’s good that you’re here! It may be true that some excellent writing and time-management skills can help you create an impressive piece, but it’s not necessary. Most of the assignments have similar outlines, whether it’s a term...

Congratulations! A dissertation is your last step before getting your doctoral degree. But, no matter how great the excitement is, the frustration and panic might be overwhelming. And it’s understandable as there is a lot of pressure on you right now. The good news is that there is nothing to...

Excellent! Thanks for your work!

I thank you for the post on this website, and you teach me what I needed to know. This really has helped a lot, so thank you.^)

Thanks! I’m a part-time student who has no time to go deep into the peculiarities of various types of academic papers. Your blog posts are brief and informative enough to write all these papers fast and effectively.

Your post on writing a bibliography boosted me up! I had no idea how to cope with this assignment before, but now after reading your how-to bibliography writing post, I’m sure to complete it without any problems! THX!))

Hi! I want to thank you for this information! I read some articles on writing a bibliography correctly, but the materials provided only concise info without patterns. In contrast, your bibliography writing guidelines are what every student needs to write this section successfully!

I had to write a current event essay with a bibliography. This website really helped. Thanks, Lena

Nice guidelines on how to write a Bibliography, I really need it. Thanks a lot for such a helping website.

Thanks a lot for this website! Many of the other sites that come up on Google don’t give you a clear enough understanding of how to write it. They’ll just give you a model and expect you to comprehend what all the examples stand for.

Help | Advanced Search

Mathematics > Optimization and Control

Title: exactness conditions for semidefinite relaxations of the quadratic assignment problem.

Abstract: The Quadratic Assignment Problem (QAP) is an important discrete optimization instance that encompasses many well-known combinatorial optimization problems, and has applications in a wide range of areas such as logistics and computer vision. The QAP, unfortunately, is NP-hard to solve. To address this difficulty, a number of semidefinite relaxations of the QAP have been developed. These techniques are known to be powerful in that they compute globally optimal solutions in many instances, and are often deployed as sub-routines within enumerative procedures for solving QAPs. In this paper, we investigate the strength of these semidefinite relaxations. Our main result is a deterministic set of conditions on the input matrices -- specified via linear inequalities -- under which these semidefinite relaxations are exact. Our result is simple to state, in the hope that it serves as a foundation for subsequent studies on semidefinite relaxations of the QAP as well as other related combinatorial optimization problems. As a corollary, we show that the semidefinite relaxation is exact under a perturbation model whereby the input matrices differ by a suitably small perturbation term. One technical difficulty we encounter is that the set of dual feasible solutions is not closed. To circumvent these difficulties, our analysis constructs a sequence of dual feasible solutions whose objective value approaches the primal objective, but never attains it.

Submission history

Access paper:.

• HTML (experimental)
• Other Formats

References & Citations

• Google Scholar
• Semantic Scholar

BibTeX formatted citation

Bibliographic and Citation Tools

Code, data and media associated with this article, recommenders and search tools.

• Institution

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs .