"APA" stands for American Psychological Association, and it is one of several accepted standard formats for giving credit to the sources you use for academic projects. If you want to look up more rules for citing information in APA format, check out the excellent guide at Purdue University's Online Writing Lab (OWL).
APA citations are provided for articles you access through databases (such as EBSCO or US History in Context.) Click the "Cite" tool located at the top of the page or on the right-hand side of the article summary page in the database, and be sure to select APA style citation!
Use a citation machine such as Bibme.org to create your APA citation for a website. Simply select the "Website" tab on the top of the Bibme.org screen, and paste the source website's URL into the search field and click "Find Website." Add any missing information into the form and click "Add to my Bibliography."
Click the icon below to access Bibme.org: