You will have assignments at times where your professor asks you to use only scholarly journals. What exactly qualifies? Here are some characteristics of popular magazines and scholarly journals, as well as some other variations.
Reference librarians can help you tell if a journal is considered scholarly. When in doubt if a source will be acceptable for a particular paper, contact your professor.
Some databases will allow you to limit your search to scholarly journals. This is not 100% accurate, but will weed out most of the popular magazines.
 Scholarly Journals      Popular      Trade      Substantive
... Scholarly Journals
- Articles are written by researchers or scholars in the field, who are generally not paid for their work.
 
- Appearance of the journal is generally plain. Most images included will be graphs and charts to support research.
 
- Articles are written in language that assumes the reader is familiar with the discipline.
 
- Articles are often chosen for publication after a peer-review (or refereed) process. This means that a jury of scholars from the field review articles and choose the ones to be included.
 
- Articles are often longer.
 
- Journal covers a narrow range of topics.
 
- There are either no advertisements, or the advertisements are for products that are especially geared toward professionals in the field. 
 
- They are usually only available as subscriptions.
 
- Articles that report research generally include the following in this order: abstract, literature review, description of research methodology, findings, conclusions, and recommendations.
 
- Sources will always be cited in a bibliography.
 
- Examples: American Journal of Political Science, Applied Psychology in Criminal Justice, Journal of Management Development, Journal of the American Medical Association
 
... Popular Magazines:
-  Most articles are written by staff writers or freelance writers, who are paid for their work, and don't necessarily have expertise in the subject that they write about. 
 
-  Appearance of the magazine is generally bright and colorful - designed to attract readers. Most contain many color photographs. 
 
-           Articles are written in          language that most adults could read and comprehend.           
 
-           Articles are selected for          inclusion by an editorial staff.            
 
-           Articles are often          shorter.           
 
-            Magazine covers a broad          subject range.           
 
-           Lots of advertisements are          included (for products that "normal" people buy).           
 
-           You can buy them at          grocery stores and newsstands.           
 
-           Articles don't follow any          sort of organized pattern.           
 
-           You will rarely find a          bibliography of sources cited.           
 
-           Examples: Rolling          Stone, Ebony, Glamour, People, Time, Sports Illustrated, Newsweek            
 
... Professional/Trade Periodicals:
-           Appearance may be more          like a magazine - including images and color.           
 
-  Articles are written in a language that might be understood by the general public, but would only be of interest to those in the field. 
 
-           Are often published by          professional organizations and given as subscriptions to paying members.           
 
-           Some articles may cite          sources in a bibliography, others may not.           
 
-  Most articles will not be formal research studies, but there may be many of a practical nature, sharing tips and "what worked for us." Others may report on industry trends. 
 
-           Examples:           Advertising Age, American Libraries, Chemical and Engineering News
 
... Substantive News Sources:
-           Articles sometimes cite          sources in a bibliography.           
 
-           Articles are lengthier and          go in more depth than in popular periodicals.           
 
-  Articles are written in a language geared towards educated adults, though not necessarily people in a particular field of study. 
 
-           Examples: Economist,          Scientific American, The Nation, Wall Street Journal