Coconino Community College's best resource for scholarly or peer-reviewed articles is JSTOR. The link above will take you to the search page.
When using JSTOR, keep in mind you can filter your results after typing in your search terms and launching a search from the homepage. For instance, if you're looking for scholarly articles, those typically appear in journals, so you can check that limiter in the box on the left.
JSTOR contains journal articles that may be too old for your purposes, so it's good to make use of the date range tool. The subject limiter will restrict your search to a specific subject--Psychology, African American Studies, etc--so make use of that if you see search results that are far from what you were looking for.
JSTOR makes it easy to download any articles you need. You can also generate a full citation in the format of your choosing. Users can register for a JSTOR account in order to save articles right to the platform.
Scroll down for more search ideas!
There are many Gale resources that contain scholarly or peer-reviewed articles. I find that searching all of them at once, as you'd do with the search box on the homepage, yields a lot of random results. Better in this case to be precise. Academic Onefile is the best bang for your buck: it contains mostly scholarly articles, so you aren't sifting through a bunch of magazine articles or books.
In the screen shot above, notice 1) the result type links at the top: this search has defaulted to Academic Journals (69). Not all academic journals are peer-reviewed, so the tool puts that designation next to each result title in the list (#2). The limiting tools on the right (#3) will restrict the search even further by date of publication, subject, etc. Notice the toggle box for Peer-reviewed journals. If your assignment specifies that you can only use peer reviewed sources, check this box.
If you are finding what you're looking for here, try a broader search in Gale Research Complete, or one of the options below. And you can always ask your librarian.