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APA Style Manual explanation from Purdue University
Basic Legal Citation explanation from Cornell University
CSE (for science) explanation from Monroe Community College
Chicago Style (also known as Turabian) explanation from University of Wisconsin
MLA explanation from Purdue University
Citing Government Documents using MLA explanation from University of Nevada
EasyBib.com free bibliographic citing help for MLA, APA, Chicago/Turabian
When style manuals refer to an aggregate OR an aggragated database, this refers to databases that have articles from more than one publication.