Most web pages that are useful sources, will have elements similar to books and journal articles. These elements can be used to build a citation for the web page.
Lastname, Firstname. “Title of Web Page.” Publishing Organization or Name of Website in Italics. Publication date and/or access date if available. URL.
Mister Jalopy. “Effulgence of the North: Storefront Arctic Panorama in Los Angeles.” Dinosaurs and Robots. Last modified January 30, 2009. http://www.dinosaursandrobots.com/2009/01/effulgence-of-north-storefront-arctic.html.
Editor, author, or compiler name (if available). Name of Site. Version number. Name of institution/organization affiliated with the site (sponsor or publisher), date of resource creation (if available). Medium of publication. Date of access.
The Purdue OWL Family of Sites. The Writing Lab and OWL at Purdue and Purdue U, 2008. Web. 23 Apr. 2008.
Felluga, Dino. Guide to Literary and Critical Theory. Purdue U, 28 Nov. 2003. Web. 10 May 2006.
Author, A. A., & Author, B. B. (Date of publication). Title of document. Retrieved from http://Web address
Angeli, E., Wagner, J., Lawrick, E., Moore, K., Anderson, M., Soderland, L., & Brizee, A. (2010, May 5). General format. Retrieved from http://owl.english.purdue.edu/owl/resource/560/01/