ASU Library: Citation Style (APA | MLA)
An overview of several of the most frequently used citation styles as well as access to additional styles used within the scientific disciplines.
The OWL at Purdue University (APA| MLA)
The oldest and one of the most comprehensive online writing labs.
The Basic of APA Style
Tutorial created by American Psychological Association.
Citing Information (University of North Carolina) (APA | MLA)
A guide from University Libraries-University of North Carolina.