Note: The [blog post]in the above example is the format description. Other format description examples, listed on p. 186 of the APA Style Manual, include [Letter to the editor], [Special issue], [Special section], [Monograph], [Abstract], [Audio podcast], [Data file], [Brochure], [Motion picture],[ Lecture notes], [CD], [Computer software], [Video webcast], and [Supplemental material].
If no individual author for a Web page is given, list the organization responsible for the content of that page as the author.
Example:
The College of William and Mary. (n.d.) College mission statement. Retrieved from http://www.wm.edu/about/administration/provost/mission/index.php