Many of our databases have this button, which searches for the full-text of the article in our collections. If we don't have it electronically, look for the "Request article scan" link in the "Get It" section.
Use filters to narrow your results to peer-reviewed resources:
In the library catalog, the "Peer-reviewed Journals" filter is located on the right-hand side of the search results list, under the "Availability" section (see image above). Individual records that are peer-reviewed are labelled in the results list by a purple eyeball and book icon (below image)
In a database the filter (in the image below from EBSCO the filter is called "Scholarly (Peer Reviewed) Journals" but may be titled differently in each database) will be located in a menu on the side of the search results list.