See what articles those students used. I'm interested that you find a scholarly article that can serve as a rigorous model of a psychology publication, and especially one pertinent for the course topic as even within psychology there are different styles. Popular literature is often misleading. Psychology majors ought to learn which journals are APA or APS journals. These are generally among the best in the particular field and will serve as good models or resources for you.
Ownership is revealed inside the front cover.
Information posted to the Internet is most often the scholarly equivalent of a notice posted on a public bulletin board. If you trust information of that nature, I have a bridge you may be interested in buying. The Internet has been described as a pond a million miles wide and an inch deep. You are in college to learn to be a scholar, not a skimmer. You are assured of high quality information in a print journal or it wouldn't be worth the added cost of printing it.