How do you find out if a journal is peer-reviewed or refereed? Here are three possible methods.
Check Ulrich's Periodical Directory this source provides information about whether a specific journal is refereed, as well as the publisher, cost, and frequency of a journal. It does not provide any information about the articles published in a journal. Search for the title of a journal, then look for the icon that designates refereed titles.
Check the journal's guidelines for article submission. Some journals' guidelines state clearly that the journal uses a peer-review process. In others, the guidelines say to send three or more copies of the manuscript, which is an indication that the peer-review process is used.
Some indexes allow you to "filter" the results by whether the journal is refereed.