The following FAQs address issues in MLA citation and/or formatting. Further information on MLA style and citation can be found at the Purdue OWL’S MLA Formatting and Style Guide page.

I have to write a paper in MLA format. Where can I learn more about writing in MLA?

The Purdue OWL maintains an extensive resource that deals with MLA style. See our MLA Formatting and Style Guide. Additionally, the MLA Style Center is an official resource that provides answers to frequently asked questions, guidance on formatting research papers, documentation tips, and other assistance in writing paper in MLA format.

How do I use MLA citations and list of works cited in a PowerPoint presentation?

To cite sources in a slide presentation, MLA suggests including brief citations on each slide that includes material from your sources, including quotations, summaries and paraphrases, images, or data. Include a works-cited list on a slide at the end of your presentation. MLA also suggests providing your list of sources to your audience, either through a URL or printed copy that you hand out in your presentation. For more details, see the MLA Handbook, 8th ed., pp. 127-28.

How do I cite email?

When you document an email in your list of works cited, make sure to include a reference to yourself, either by name or as author, as the Title of Source element.

What is a container?

Containers were first mentioned in the 8th edition of the MLA Handbook. Containers are the larger wholes in which the source is located. For example, if you want to cite a work (e.g. essay, short story, poem) from an anthology, the individual work is the source, while the anthology is the container. The title of the container is usually italicized and followed by a comma, since the information that follows next provides more information about the container. A container could also be a television series, which is made up of episodes, or a website, which contains articles and postings.

What is a DOI?

A DOI, or digital object identifier, is a series of digits and letters that permanently leads to the location of an online source. Articles in journals are often assigned DOIs by the publisher to ensure that the source is locatable, even if the URL changes.Typically, the DOI is considered better than the URL. However, there are advantages and disadvantages to using URLs and DOIs, so the preference of you instructor, institution, or publisher is most important.

Do I need to include a URL when I document online sources in my list of works cited?

The MLA Handbook (9^thedition) prefers the DOI to the URL. However, it also recognizes that the URL can provide information of where the work was found and link your audience to your sources in digital works. If you’re unsure about whether to include the URL, double check with your instructor. Different instructors may have different preferences.

When the title of a newspaper begins with an article (the, a, an) do I need to include it when I list the title in my citation?

This change was first introduced in the eighth edition handbook. Previously, MLA did not require the article in the title of a periodical (newspaper, journal, magazine), but the updated handbook states that the article should now be considered part of the title. The article should be capitalized and italicized. For example, refer to The New York Times, (rather than New York Times), when citing it in your text or works-cited list.

For more information on this, check out the MLA Style Center’s page on What’s New in the Eighth Edition.

How do I cite e-books or Kindle books?

An e-book is considered a version, so it should be listed after the title of the book, before the publication information. If you know the type of e-book you used (such as Kindle or Ebook library), be sure to specify that. Avoid using device-specific numbering systems, since they will vary among different devices. If the book has chapters, sections, or other stable numbering systems, it is permissible to identify parts of the text that way.

How do I cite a tweet?

The full text of the tweet should be your title. Enclose the text in quotation marks, and include the date, time, and URL.

If the author’s online handle is different from the account name, provide the handle in square bracket after the name.

How do I cite a book that I accessed online?

Cite the book just like you would if it were in print. Then add the name of the database or website you used to access the online book, and add a URL or other location indicator at the end of the citation.

How do I cite an unpublished manuscript/document?

Author. “Title of Manuscript/Document.”. date of composition (at least year), along with "the name and location of the library, research institution, or personal collection housing the material."

How do I cite the US Constitution?

References to the US consitution in the body of your text should be written as “the Constitution.” If you are only discussing it based on general knowledge, you do not need to cite it. However, if you are using a named edition, you should treat it like the title of the book:

The Constitution of the United States, with Case Summaries. Edited by Edward Conrad Smith, 9th ed., Barnes and Noble Books, 1972. 

If you use a named edition, your in-text citations should help your readers locate the exact entry in the Works Cited:

(Constitution of the United States, with Case Summaries)

Keep in mind for citations of any constitution, including the US, the country of origin should be specified if the title does not indicate what country the constitution belongs to:

France. Le constitution. 4 October 1958. Legifrance, www.legifrance.gouv.fr/Droit-francais/Constitution/Constitution-du-4-octobre-1958.

For more information on citing legal documents, refer to the MLA Style Center’s page on Documenting Legal Works in MLA Style.

How do I cite a definition from an online dictionary, like Dictionary.com?

In most cases, a word entry in an online dictionary includes a part of speech and numbered definitions, which should be included in the title. The original source is the container. To indicate the definition came from the web source by including the URL. The access date is optional, but include it if it will best help your readers locate the source.

How do I cite a footnote?

The ninth edition MLA handbook does not address this question, but one entry in the online MLA Style Center does provide a set of directions for this task. This page states that a citation for another author’s footnote in your own text should include the following, in parentheses: author’s name, the page number, the letter n (to indicate note), and the note number.

There are no spaces between the page number, the letter n, and the note number.

If you refer to multiple notes, use nn and separate the note numbers from the page number by using brackets.

How do I cite genealogies and birth/death certificates?

Although MLA does not offer any guidelines on how to handle genealogies and birth certificates, a few websites offer their own resources and citation methods to follow:

Genealogy.com offers a method of citing birth/death certificates. Follow the link and scroll down to “Official Records.”

In addition, Archive.gov offers a leaflet called Citing Records in the National Archives of the United States.

How do I cite the information from food nutrition labels?

The MLA does not generally require you to create works-cited-list entries for nutrition labels. You can instead provide a simple description of the product in the sentence or in a note.

Example (in a sentence):

Example (in a note):

In the event that your writing deals extensively with nutrition (such that nutrition labels serve as important sources of evidence), you may optionally create works-cited and treat them as you would any other source. Make sure to include the core elements, in the proper order, and provide as much information as your readers will need to locate the source.

How do I cite an informational plaque or an information card?

Treat informational plaques/cards as you would any other source. Make sure to include the core elements, in the proper order, and provide as much information as your readers will need to locate the source. Use the title of the plaque as the title of your source. If you have experienced an object firsthand, such as in a museum, give the name of the place, the city in which it is located, and the dates of the exhibition.

When I am repeatedly quoting or paraphrasing the same source in my paper, do I have to keep citing that source at the end of each sentence?

When you reference the same source more than once in the same paragraph, and no other source intervenes, you may give the in-text citation just once at the end of the paragraph. If, however, this technique creates any ambiguity about your reference, it is better to cite the source every time you reference it.

For example:

This makes clear that the first quotation is from the first page number in the parentheses, and the second quotation is from the second number.

There are other ways to do this as well. You may cite the author’s name with the page number after the first direct quotation, and just list the page number after the second quotation.

If I quote from two different sources in the same sentence, how do I cite both?

While the MLA does not prohibit references to more than one source in the same sentence, it is generally best to begin a new sentence when referring to a new source. Your goal is to present your information as clearly as possible so that your readers can best follow your points. With that in mind, if you find yourself attempting to cite two sources in the same sentence, chances are, your ideas will be clearer if you break them into two sentences.

For example:

If I “just know” a fact or idea (something I learned in high school, for example), do I have to cite my high school course or textbook?

This question falls under the issue of common knowledge. Common knowledge generally includes biographical information, dates of historical events, and other undisputed, widely available information. If you think that your average, reasonable reader already accepts this information as fact, it is not necessary to document it.