After I made my first link to another site, I took a look around the internet on the rules regarding referring to another person’s content with a link. I found the information at Lorelle’s WordPress School helpful.
From my college days I am accustom to using APA format. The American Psychology Association website has useful information at this link on APA Style for specific content and this link is clear information for citing an entire website.
My wife teaches at New Mexico Highlands University and has students refer to the Purdue Owl, an online writing lab to help with APA format issues. There is somethings called pingbacks and trackbacks that share citing of things back and forth beneath what we see on the surface.