APA Style is surprisingly lax with regard to citing websites.
Some reference guides suggest you can simple cite the URL in the body of the text as a parenthetical reference, unless you are citing a specific item within the website or directly quoting from the website.
Author - last name, first initial. (Date created or updated).
Title. Retrieved from URL.
If you are unable to determine when the item was created or updated, put (n.d.).
Webpage Sec 7.09:
Mitchell, S. D. (2000). The import of uncertainty.
Retrieved from http://philsci-archive.pitt.edu/
Gangsters Inc. (2010). Organized crime history:
Did the mafia turn the United States into a
better country? Retrieved from: http://
Essay in Library Database:
I have not found an example of this in 5th or 6th editions, so this is a little bit of guess work.
In the following example from Biography in Context database, the publisher (Gale) does not issue DOIs. I also do not want a huge string of URL, so I am treating it like an article from a database that does not issue DOIs and have really long URLs. The last part is a Gale document number listed at the end of each item.
Sigmund Freud. (2001). In World of Sociology.
Retrieved from Biography in Context
Duncan, L. (2004). The welfare of
children [NetLibrary version].
Retrieved from http://www.netlibrary.com
Video - online
Based on Sec. Sec. 7.07:
Nichole337. (Producer). (2011, January 6).
Toxic Britney Spears cover by Nichole337
[Video File]. Retrieved from http://www.