There are an infinite number ways of formatting a paper, and there are still a large number of paper formal styles. Most formatting styles handle citations within the text, endnotes/footnotes, and the works cited page. Some of the most notable styles include APA, Chicago and MLA.
For Ms. Darrouzet-Nardi's class, you will only use APA style.
Because of this, the guide focuses exclusively on APA. If you need to use another style for another class, the OWL at Purdue is an excellent resource for Chicago and MLA styles.
There are programs that will help you keep track of your citations and format them appropriately for you.