Know the difference between empirical and review articles.
An empirical (research) article reports methods and findings of an original research study conducted by the authors of the article.
A review article or "literature review" discusses past research studies on a given topic.
Know the difference between scholarly and non-scholarly articles.
Good guide provided by:
University of Arizona
"Scholarly" journal = "Peer-Reviewed" journal = "Refereed" journal
To determine if your article is from a scholarly journal: