This link is to Purdue University Writing Center, the best APA resource we have found on the web.
This link is to the APA's style page and is updated regularly.
This is a citation wizard that will produce an APA citation; however, please check for errors.
This is the Wright State University Library's Ref Works link. It will produce a bibliography in any style you need.
This has general dissertation information, and is recommended for general information: