Use Bluebook: A Uniform System of Citations (dubbed "Bluebook" for the color of its cover). 21st ed. (2020) at the 2nd-floor Reference DESK (in-Library use only, leave an ID at the Desk while you have it), and 20th edition (2015) available in 3rd-floor Main Collection, KF245 .U53.
Georgetown Law Library's online Bluebook Guide is very helpful.
UWW's business librarian has created some video Bluebook tutorials.
Courts may designate an official reporter and require particular citation formats. See, for example, SCR 80.02 "Proper citation" in the Wisconsin Supreme Court Rules that requires a public domain format for citing cases since January 1, 2000.
Cite all sources quoted or paraphrased in a research paper. For rules and examples of APA Style, consult the Publication Manual of the American Psychological Association, 7th ed. 2020 (copy available at Andersen Library's Reference Desk).
Online citation formatters and citation help from library databases are not foolproof. Always review your citations to be sure they are correct.
This link opens in a new windowHelp from APA:
The Bluebook
Publication Manual of the American Psychological Association