Citation Style Guides

MLA, APA

http://www.english.uiuc.edu/cws/wworkshop/writer_resources/citation_styles/citation_styles.htm

Chicago-Turabian

http://www.lib.berkeley.edu/TeachingLib/Guides/Chicago-Turabianstyle.pdf

Multiple styles (brief guide for each)

http://www.liu.edu/CWIS/CWP/library/workshop/citation.htm

Internet Sources

http://www.library.ucla.edu/url/referenc/citing.htm

Academic Writing

http://www.utoronto.ca/writing/advise.html
http://writing-program.uchicago.edu/resources/collegewriting/
http://www.writing.ku.edu/students/guides.shtml#3
http://www.waukesha.uwc.edu/academics/owl/
Strunk Elements of Style