When you cite references to articles or books, you will need to put your citations into a specific style. This MSU Library Citing Resources Web site has information on some common styles used for citations.
The style you're being asked to use for PSL 310 HO is: AMA (American Medical Association) style.
Here are several different library sites from other universities about how to use AMA style:
Citing an electronic book is just like citing a hardcopy book. Be sure to include all the parts: author, title, book chapter title, volume, pages, etc. If electronic, you can also add something like: "accessed online on the Elsevier Science Direct platform, February 24, 2015."
You do not need to do anything special for citing online journals if they are respected medical journals indexed in a database like PubMed. These are unchanging and fixed documents, and so retrieval date is not important. If you are citing an article that you got off the internet from another source, you may need to cite the access date.
You need to pay careful attention to what type of electronic material you are citing. If it is an online book, follow instructions for citing books. If it is an online journal, follow instructions for citing journal articles. If it is a Web document that is neither of the above, follow general AMA instructions for citing Web sites.
If you use an image from an article or book, be sure to cite the whole source. Using images from articles and books is OK for presentations for your class. Due to copyright law, you may not post the image online or use for other non-classroom activities.