In many of our databases, you can click on the journal title from your results list and get more information. Often times this information includes whether it is peer reviewed (or refereed) or not.
If that information is missing or you're still unclear, you can Google JOURNAL NAME AND PEER REVIEW to get more information.
Another resources to use is a library database called Ulrich's. Search for the journal title and you can find all sorts of publication information for the journal. If it includes a black and white referee shirt, then it is a peer reviewed journal.