Look for an article status statement/peer review statement. This type of statement indicates that the article has been peer-reviewed and is located either at the beginning of the article or at the end of the article.
Here are two examples of these statements:
Received 22 December 2009; revised 27 February 2010; accepted 21 April 2010.
(To this article the reviewers said the article was good, but that some things needed to be changed before publication.)
Received 19 September 1986; accepted 24 November 1986.
(To this article the reviewers said the article was great, please publish it. This kind of statement is really rare.)
To learn more about the peer-review process please read the Understanding Peer-Review document below.
The following characteristics list provides features of a Scholarly Article:
[Excerpt from Mabee Library-Washburn University]