The following web sites provide examples on how to cite sources using APA, MLA and other style guidelines. For complete information, always refer to the latest published manuals.
OWL (Online Writing Lab, Purdue U)
Great source for information on writing papers and citing sources with lots of examples.
Specific Style Guides
APA Style Guide (OSU)
CSE Style Guide (OSU)
Chicago Style Citation Guide (OSU)
MLA Style Guide (OSU)
NLM Style Guide