APA 7 vs MLA 9 vs Chicago: A 2025 cheat sheet for US college students
When to use each citation style, the formatting rules professors care about most, and the cite-as-you-write shortcut that saves an hour per paper.
Three citation styles run almost every US course you'll take. Pick the wrong one, lose a letter grade. Below is the simplest, most accurate cheat sheet we've built, refined from thousands of student orders across the country.
When to use each style
APA 7: psychology, sociology, education, nursing, business, communications, anywhere the field is data-driven. MLA 9: English, literature, philosophy, languages, art history, anywhere close reading of texts is the work. Chicago: history, classics, fine arts, some political science, anywhere primary sources and footnotes dominate.
If your syllabus doesn't say, ask your professor in writing. Don't guess, using APA in a literature course will mark your paper as off-rubric before the grader reads a sentence.
APA 7: the rules that actually matter
Title page is now required for student papers (unless your professor says otherwise). Headings use a five-level system but most undergrad papers only need levels 1 and 2. In-text citations use (Author, Year, p. X) for direct quotes and (Author, Year) for paraphrase. The References page is alphabetical, hanging indent, italicized titles for books and journals.
MLA 9: the rules that actually matter
No title page, your name, professor, course, date go in the top-left of page 1. In-text citations are (Author Page), no year, no comma. Works Cited at the end, alphabetical, hanging indent, titles in italics or quotes depending on the source type. The container concept matters: a journal article 'contained' in a database lists both the journal and the database.
Chicago: the rules that actually matter
Two flavors, Notes & Bibliography (humanities) and Author-Date (sciences). Most students use Notes & Bibliography: footnotes for every citation, full reference in the first footnote, shortened version after, plus a Bibliography page. Footnotes are superscripted at the end of the sentence after the period.
The cite-as-you-write shortcut
The single biggest time-saver: as you draft, drop a placeholder like [SMITH 2018 P22] inline every time you reference a source. Don't stop to format. After the draft is done, do a single pass replacing placeholders with proper citations and building the references page from the placeholder list. This saves about an hour per paper and dramatically reduces missed citations.
Tools that don't break
Zotero (free, works in Word and Google Docs) for managing sources and generating both in-text citations and the references page. Purdue OWL for quick rule lookups. Your university library's citation generator if Zotero overwhelms you, most schools host one.
The mistake graders flag most
Citing the database instead of the article. If you pulled an article from JSTOR or EBSCO, the citation goes to the journal article, JSTOR and EBSCO are containers, not sources. Get this wrong and you'll look like you skimmed the abstract instead of reading the paper.