Created by the Modern Language Association, MLA is widely used in the humanities, especially in writing on language and literature.
Currently, there are two authoritative style guides; the Handbook is used primarily by undergraduates until its 7th edition is released; the Style Manual is recommended for faculty and graduate students. Both can be found in Raynor Reference and in Memorial Library for checkout.
Gibaldi, Joseph. MLA Handbook for Writers of Research Papers. 7th ed. New York: Modern Language Association of America, 2003.
Gibaldi, Joseph. MLA Style Manual and Guide to Scholarly Publishing. 3rd Edition New York: Modern Language Association of America, 2008.
FAQs about the MLA Handbook (from MLA's site)
FAQs about the MLA Style Manual (from MLA's site)
Documenting Sources, MLA Style (Dana Hacker)
MLA Formatting and Style Guide (Purdue's Online Writing Lab)
MLA Style (NMU)
Library of Congress: How to Cite Electronic Sources (includes Chicago and MLA style for Web sites, a cartoon, films, legal documents, maps, a newspaper, photographs, sound recordings, special presentations, and texts)
Student Guide to Citing Archival Sources (includes MLA examples)