Check at the end of the article for a Bibliography or References list. A well-researched article will have a list of all the sources that the author used. If there are no References, it is probably NOT a scholarly article. Also, look for an Abstract at the beginning of the article - long, in-depth articles will often start with an abstract (a summary of the article) to explain the key points or conclusions in the research or study.
Ferraro, F. Richard, et al. "Aging, Body Image, and Body Shape." Journal of General Psychology 135.4 (Oct. 2008): 379-392. Academic Search Premier. EBSCO. RVCC, North Branch, NJ. 16 Dec. 2008