Peer-reviewed sources are researched and written by an expert in a field and then are put before a board of other experts in that field to be peer-reviewed. You can indicate within the databases that you want your results to be scholarly and peer-reviewed. Other terms used for peer-reviewed documents are scholarly articles and academic articles.
Discusses methods of research, results, etc.
Has tables & graphics
Has references, works cited and bibliographies.
Little to no advertising.
Lists authors and affiliations
Example of a Scholarly/Peer Reveiwed Journal:
Popular sources are easier to understand than peer-reviewed sources. They are created for the average person to read an enjoy. Peer-reviewed articles are meant to educate the researcher.