Modern Language Association style and the Purdue OWL
MLA style is widely used in the humanities for source citation and formatting. The Purdue University Online Writing Lab (OWL) is a trusted, free reference that explains MLA guidelines in detail. This guide describes MLA formatting, in-text citations, and Works Cited entries based on current recommendations. It aims to support consistent, honest attribution and help you apply rules accurately across papers and sources.
Core MLA formatting rules
MLA style sets baseline formatting to make documents clear and consistent. Use a readable font such as Times New Roman, size 12, with 1-inch margins on all sides. Double-space the entire document, including quotations and Works Cited entries. Indent the first line of each paragraph 0.5 inches. Include page numbers in the top right, with your last name, starting with the first page. The title should be centered and written in title case without bold or italics. These standards keep work tidy and professional, and they make it easier for readers to locate sources.
Paper presentation and readability
Present work on standard, white 8.5-by-11-inch paper unless your instructor specifies otherwise. Avoid using colored paper or decorative covers for academic essays. Print on one side of each sheet unless your teacher asks for something different. Staple pages together securely rather than using binders or folders that interfere with reading. A clean, simple layout keeps focus on your analysis and evidence.
Headers, pagination, and title formatting
Place a header in the top left corner with your full name, your instructor’s name, the course number and section, and the date in day-month-year format. In the top right corner, include a running head with your last name and the page number. Center the title on its own line, using title case and standard capitalization. Do not underline, italicize, or place the title in quotation marks unless you are citing a source within the title. These layout choices reduce distractions and support a scholarly appearance.
MLA in-text citation fundamentals
In-text citations point readers to the Works Cited and show where ideas or words come from. Use parenthetical citations immediately after quoted, paraphrased, or summarized material. Include the author’s last name and a page number when available, with no punctuation between them. Place the period after the citation so the sentence ends naturally. When a source has no author, use a shortened version of the title instead. The goal is to guide readers clearly to the full entry without interrupting your flow.
- Author-page format: (Smith 42)
- No author, quoted material: ('Climate Data' 17)
- Multiple authors, two names: (Chen and Lopez 88)
- Three or more authors: (Chen et al. 88)
Quoting and paraphrasing
Use quotation marks and an in-text citation for direct quotes. Short quotes of four lines or fewer are integrated into your paragraph with quotation marks. Longer quotes are set off as block quotations, indented 0.5 inches from the left margin and without quotation marks. Paraphrase by restating ideas in your own language and still cite the source. Do not present others’ phrasing or structure as your own, even if you credit the author.
Structure of an MLA Works Cited entry
A Works Cited entry provides full publication details so readers can find a source. Core elements appear in a consistent order: author, title of source, title of container, contributors, version, number, publisher, publication date, and location. Begin each entry flush left. Subsequent lines use a hanging indent of 0.5 inches. Italicize titles of larger containers such as books, journals, or websites. Use quotation marks for titles within a larger work, such as articles in journals or chapters in books. Maintain consistent punctuation and capitalization throughout your list.
Container concept and order
MLA uses a container model where each source sits within one or more larger wholes. A journal article is the source and sits within a journal, which is a container. A webpage sits within a website, which is a container. List the source first, then the container in italics. Include a comma after the container, then move to the next element. This structure clarifies how sources relate to each other.
Examples for common source types
The following examples illustrate standard formats based on current MLA guidance. Use them as models for similar sources, adapting elements such as capitalization, punctuation, and abbreviation as needed. Verify details for each source to ensure accuracy.
| Source type | Author or creator | Title or label | Container or venue | Publication details |
|---|---|---|---|---|
| Book | Author Last, First | Book Title in Sentence Case | City: Publisher, Year | |
| Journal article | Author Last, First | "Article Title in Sentence Case" | Journal Title, vol., no., year, pp. range | Web |
| Webpage | Organization or Author Last, First | "Page or Document Title in Sentence Case" | Website Name, Publisher if different, date, URL | Web |
| Chapter in a book | Author of chapter Last, First | "Chapter Title in Sentence Case" | Book Title in Sentence Case, edited by Editor First Last, Publisher, year, pp. range | Print or Web |
MLA Works Cited examples
- Book: Last, First. Title of Book. Publisher, Year.
- Journal article: Last, First. "Title of Article." Journal Title, vol., no., Year, pp. range.
- Webpage: Last, First. "Title of Page." Website Name, Day Month Year, URL.
- Chapter in edited book: Last, First. "Title of Chapter." Title of Book, edited by Editor First Last, Publisher, Year, pp. range.
Evaluating and citing digital and online sources
When citing online sources, prioritize stability and retrievability. Use the permanent URL or DOI when available. If a date is unclear, use n.d. for no date. If an author is missing, cite by title. When a site has corporate authorship, list the organization as the author. Consider whether a source is likely to change, and, when possible, note the date of access for sources without a stable publication date. These steps support reliable attribution over time.
Stable access and version control
For webpages, include the full URL without formatting such as https:// or http:// only when necessary. If a URL is long, use a permalink or stable link provided by the site. For sources that change, note the access date if your field or instructor requests it. Treat social media posts, videos, and datasets as you would other sources, including author, title, site, and date. Consistency helps readers locate what you used.
Common mistakes and how to avoid them
Certain errors recur in MLA citations. Forgetting to double-space the Works Cited or using single spacing is common; remember that the entire list should be double-spaced. Punctuation mistakes, such as missing periods after container titles, can be avoided by checking each element. Mixing up italics and quotation marks is another issue; remember to italize containers and use quotes for shorter parts. Using automatic tools without review can also introduce errors; always verify entries manually.
- Inconsistent spacing or indentation
- Incorrect use of italics vs quotation marks
- Missing or misplaced punctuation
- Failure to verify retrieved details
Tools, templates, and best practices
The Purdue OWL provides free MLA guides, templates, and examples that align with current standards. Citation managers can reduce manual errors, but you should check output against official rules. Use built-in templates only as a starting point and confirm formatting manually. Keep a working Works Cited file as you research to save time later. Regularly review updates from the Purdue OWL in case guidelines evolve.
Quick checklist before submission
- Double-space entire document and Works Cited
- Use hanging indents for all entries
- Italicize container titles and use quotation marks for shorter titles
- Verify author names, titles, and dates
- Confirm page numbers and URLs where applicable
When to consult the official Purdue OWL
Rules and examples on the Purdue OWL reflect current MLA guidance, but details may change between editions. When in doubt, refer directly to the latest Purdue OWL MLA pages and the official MLA Handbook. The OWL addresses edge cases such as multiple authors, missing elements, and unusual source types, helping you apply rules consistently. Treat the handbook as the final authority for academic work.
FAQ
Reader questions
How do I cite an online article without an author in MLA?
Use a shortened version of the title in place of the author. Place the title in quotation marks if it is a short work, or italicize it if it is an independent work, and include a page number if available.
Should I include the date of access in MLA citations?
Access dates are generally not required unless a source has no publication date, is likely to change, or your instructor requests them. When used, place the phrase "Accessed" followed by the full date in day-month-year format.
Can automatic citation generators replace manual checks?
Tools can help draft citations, but you should always verify them against official MLA rules. Small formatting errors can affect credibility, so review each entry carefully before submission.