Here are some general guidelines to assist you in identifying scholarly sources.
Scholarly sources present sophisticated, researched arguments using both primary and secondary sources and are written by experts. Journals are examples of scholarly sources.
Popular sources aim to inform or entertain and are intended for a general, non-specialized audience. In academic writing, popular sources most often are analyzed as primary sources. Magazines are examples of popular sources.
To determine the difference between these two types of sources, ask yourself: