Modern Language Association (MLA) Format is used for literature, arts, and the humanities: MLA Handbook for Writers of Research Papers.
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Additional MLA Resources
Cornell University - Citation management
Cornell University - MLA for a Book Found on Google Books
EasyBib - MLA 7 vs. MLA 8
Modern Language Association - The MLA Style Center
Online Writing Lab (OWL) MLA Eighth Edition
University of Wisconsin, The Writing Center, MLA Documentstion Guide
Other Style Guides for Research Papers
AMA (American Medical Association) Manual of Style: A Guide for Authors and Editors is used for medicine, health, and biological sciences.
Publication Manual of the American Psychological Association is used for psychology, education, and other social sciences.
Chicago Manual of Style is used in used with all subjects (literature, history, the arts and social sciences.
Turabian's Manual for Writers of Research Papers, Theses, and Dissertations was designed for college students to use with all subjects and is based on the Chicago Manual of Style.
Harvard Guide to Using Sources
Jonah Lehrer - "A Fraud? Jonah Lehrer Says his Remorse is Real." New York Times
NPR - On the Media "Cribbing Through the Ages"
NPR - On the Media "The Dirty Dozen" or 12 common plagiarism excuses
"Parsing the Plagiarism of Fareed Zakaria" by Michael Kinsley in Vanity Fair
The Writing Center, University of Wisconsin - Avoiding Plagiarism