A peer-reviewed article is also known as a scholarly article. This is an article that has gone through the process of being reviewed by the author's peers through the editing process before it can be accepted into an academic journal.
Peer-reviewed articles or scholarly articles can be found in Library Search and databases. Most databases have a filter to restrict to view only peer-reviewed articles making the searching process easier.
In the Library Search, simply click on the Peer-Reviewed Journals option and click "Apply Filters" to search for only peer-reviewed articles. Below is an image showing how to limit to peer-reviewed journals when searching the library's catalog.
