MLA—most commonly used in the fields of liberal arts/humanities, such as English/Lit.
See MLA Handbook for Writers of Research Papers, 6th ed., by Joseph Gibaldi Call Number: LB2369 .G53 2003 or the MLA Style Guide (The Owl at Purdue)
APA—most commonly used in the field of social sciences, such as psychology
See Publication Manual of the American Psychological Association, 5th ed. Call Number: BF76.7 .P83 2001 or the APA Style Guide (The Owl at Purdue)
AMA—used in the fields of medicine, nursing and biomedical sciences
See American Medical Association Manual of Style, 9th ed. Call number: R119 .A533 1998 (Reference) or the AMA Style Guide (College of Eastern Utah-San Juan)
CSE—used in the fields of biological sciences
See Cite Right: A Quick Guide to Citation Styles—MLA, APA, Chicago, the Sciences, Professions, and More, by Charles Lipson Call Number: PN171.F56 L55 2006 (Reference) or the CSE Style Guide (Mundt Library Dakota State University)
Chicago—used in many fields of study, including history
See The Chicago Manual of Style, 15th ed. Call Number: Z253 .U69 2003 (Reference) or the Chicago/Turabian Style Guide (Simon Fraser University Library)
Turabian—used in all fields of study and is most commonly used by undergraduate students
See A Manual for Writers of Term Papers, Theses, and Dissertations, 6th edition, by Kate L. Turabian, call number: LB2369.T8 1996 (Reference) or the Turabian Style Guide (University of Wisconsin-Milwaukee)
See also: Avoiding Plagiarism