If you're not sure if a journal is peer-reviewed, you can search for the journal name in Ulrich's and look for the little black-and-white referee jersey.
NOTE: Ulrich's will NOT tell you if a specific article is peer-reviewed - it will only tell you if that journal has a peer-review process. Note that book reviews, letters to the editor, and commentaries (opinion pieces) are typically NOT peer reviewed even if the journal is.