Depending on what your professor prefers, they might have you include notes at the bootom of the page where the source is referenced (FOOTNOTES) or at the end of the paper (ENDNOTES). You choose one, not both of these styles. You use a note every time you use another source whether it is in direct quote, paraphrased, or summarized. That bibliographic information is then compiled into a bibliography that lists your sources listed in alphabetical order by author's last name.
--The command in Google Docs is Control-Alt-F. The same command works in Microsoft Word. It will place a superscripted number after the period of the sentence you are adding the note to. That same number will appear in the footer at the bottom of the current page. The document will automatically follow the correct numbering.
NOTICE: in the Footnote the author's name appears as First Name Last Name. However, in the bibliography it appears as Last Name, First Name. Below you will find examples of footnotes for various sources.
1. Peter LaSalle, "Conundrum: A Story About Reading," New England Review 38, no. 1 (2017): 95, JSTOR (20569870).
2. Brian Grazer and Charles Fishman, A Curious Mind: The Secret to a Bigger Life (New York: Simon & Schuster, 2015), 12.