Information about citing e-mail messages, websites with no author, entire websites, and more can be found in the APA Style Frequently Asked Questions page under the References section.
The Purdue OWL has a detailed page with examples of electronic resources in APA format.
Inside your paper, give credit to the works you quote.
See examples of how to tell your readers where facts, paraphrases, or quotes in your paper come from at this site from the Purdue OWL.
The APA Style website provides an overview of information regarding citations in text of electronic material on the APA Frequently Asked Questions page, including: