(Department of Health and Human Services [DHHS], 2007)
Use same author–date format. If no individual author for a Web page is given, list the organization as the author. The date to use from a web page is sometimes difficult to determine. The APA blog entry for dating online documents cautions against using any of the following as the date--a “last modified,” or “revised on” date or copyright date that is site-wide--as none of these usually refers to when the material was actually created or posted. If no obvious posted date is available at the beginning or the end of a document, use “n.d.” for “no date” instead. DO NOT put a web address in the text of the paper.
(Planned Parenthood, n.d.) (Stearns, 2009) (National Health Statistics, 2003)