APA, MLA, Harvard and Chicago: what actually differs

Referencing styles look more different than they are. Almost all the variation sits in three decisions: how you cite in the body text, how you order and format the list at the end, and how much of the author name you spell out.

Once you know which style you are on, the rest is mechanical.

APA and Harvard both cite author and date in brackets, which suits work where recency matters — the reader can see at a glance whether a claim rests on something from last year or from 1978.

MLA cites author and page, because in literary analysis the location in the text matters more than the publication year.

Chicago offers both a notes system, using footnotes, and an author-date system. Which one you use depends on the discipline, so check before assuming.

APA calls it References, MLA calls it Works Cited, Chicago calls it Bibliography, and Harvard varies by institution. The name is not cosmetic — using the wrong heading is a common and entirely avoidable deduction.

This catches people out. Harvard is a family of author-date conventions, and institutions publish their own variants that disagree on punctuation and italics.

If you are told to use Harvard, find your institution’s own guide. A generic Harvard formatter will get you close and still cost you marks.

Check the module handbook first, then the assignment brief, then a previous marked piece. If those disagree, ask — do not average them.