APA Style
Citing a Webpage (APA 7.11)
Include as much of the following information as you can find (you may need to look at root pages or on “About this site” pages to find some of the information): Authors, F. M. (Year, Month Day). Title of article. Title of Periodical or Website. Retrieved from URL.
Centers for Disease Control and Prevention. (2009, August 3). Novel H1N1 Influenza Vaccine. H1N1 Flu. Retrieved from http://www.cdc.gov/h1n1flu/vaccination/public/vaccination_qa_pub.htm
In the text of your paper:
If the website pages are stable and numbered (as in PDF files), include page numbers with the citation. Otherwise, do not. (Centers for Disease Control and Prevention [CDC], 2009)
If there is no author or organization as author given, cite using the first few words of the web page’s title. (“Novel H1N1,” n.d.)