Business, psychology, and other social sciences
History, religion & theology, humanities, some sciences
History, religion & theology, other humanities
NOTE: Many people refer to "Chicago" and "Turabian" interchangeably. Though they are similar in structure, there are significant differences. Be careful that you clarify which guide you should use.
English literature, non-English literature, other humanities
Science researchers often use the citation style of leading journals instead of a standardized style. Ask your instructor about the preferred style. Your subject librarian can help you find guidelines. Here are some common science citation styles; be aware that your requirements may differ.
The most common style manual for citing legal documents is the The Bluebook: A Uniform System of Citation. APA, MLA and Chicago guides all refer to the Bluebook for citing to documents such as legal cases. More Legal Citation Help.