For an overview of the ways to cite electronic information in text in APA style, see the Purdue OWL, which provides an overview of the basic in text citation formats.
The APA Style website provides an overview of information regarding citations in text of electronic material on the APA Frequently Asked Questions page, including e-mail communications, entire websites, web pages with no authors, and website material with no author, no year, and no page numbers.
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.
The general rule for citing Web pages in APA format is to include as much information as possible. If there is no date available, use (n.d.), which stands for "no date". If the website URL you are citing runs onto the next line, be sure to break the address after a "/" (http:// is an exception). More information about electronic sources is available on the Purdue OWL site.
Author's Last Name, Author's First Initial. Author's Middle Initial. (Year, Month Day
of publication). Title of document. Retrieved from http://webpage address
Doctorow, C. (2009, August 13). Photos of science fiction writers' nests. Retrieved
When there is no author for a Web page, the title of the page takes the place of the author and is listed first. If there is no date available, use (n.d.), which stands for "no date". If the website URL you are citing runs onto the next line, be sure to break the address after a "/" (http:// is an exception).
Title of document. (Year, Month Day of publication). Retrieved from
Tenn. couple accused of assault using Cheetos. (2009, June 27). Retrieved from