So you need a peer-reviewed article. But what is a peer-reviewed article and how is it different from other kinds of articles?
"Scrutinizing science: Peer review." Understanding Science. University of California Museum of Paleontology.
Peer reviewed articles are written by experts in a particular field for an audience of other experts. A writer submits his article, and it is reviewed by his peers, other experts in the same field. It is generally considered a higher standard of publication. That doesn't mean that publications peer-reviewed are necessarily bad or inaccurate or that you can't use them for your research. It's just a different standard of publication for a different audience.
In general, non-peer-reviewed publications like magazines (like Psychology Today, on the left below) and newspapers are written for a general audience. Peer-reviewed publications (like the Journal of Personality and Social Psychology) are generally called journals and written by experts for an audience of other experts.
Go to the next page to find out how to search for these kinds of articles in the PGCC Library.