Peer reviewed journals also contain non peer reviewed content such as book reviews and editorials. Check a journal's website to see what it says about the peer review or referee process.

Contain research projects, methodology, and theory.Are written by professionals within an academic field or discipline.There are no definitive rules for distinguishing between the two, but here are some guidelines: If you are not familiar with scholarly publications, it can be difficult to tell the difference between scholarly and popular periodicals.