When someone wants you to find articles from peer-reviewed journals, he or she wants you to find articles from journals that have an evaluation process for accepting articles for publication.
Here is how it works:
Peer reviewed journals usually are more research-based, with methodologies and references to back up their statements, while non peer reviewed journals are not. Many non peer reviewed articles are from magazines and trade publications.
One great feature of LibrarySearch is you can limit your results to articles from peer reviewed journals.
To limit to peer reviewed journals:
Watch the video below to see a demonstration of how to limit to peer reviewed journals in LibrarySearch: