For this class, you'll use the APA 6th Edition citation style, a very commonlyl used author-date in-text citation style, with a list of Works Cited at the end.
A typical article citation (for an article available online through a database) in APA style:
Beamon, B. M. (2005). Environmental and sustainability ethics in supply chain management. Science and Engineering Ethics, 11(2), 221–234. doi:10.1007/s11948-005-0043-y
A typical website citation in APA style:
DiBenedetto, B. (2014, April 2). Supply Chain Worker Rights: From Good Intentions to Implementation. Retrieved September 3, 2014, from http://www.triplepundit.com/2014/04/supply-chain-worker-rights-good-intentions-implementation/
More examples and information are available here: https://owl.english.purdue.edu/owl/resource/560/05/