Ulrichsweb provides detailed information on more than 300,000 periodicals, including journals. If you are wondering if your article is peer reviewed, Ulrichsweb may provide that information. Look for the small black and white icon that looks like a referee's shirt.
There are many options for finding articles (bibliographies, library databases, web searches) but for assignments it is key that you find scholarly or peer-reviewed articles and the final version of those articles - not preprints or post-prints. If you are uncertain about the quality of the articles your are finding please consult with Reference & Research staff or your Liaison Librarian.
Remember, database searching is an iterative process. It may require testing keywords and then modifying them several times. Using database subject terms and thesauri may increase search results.