The authors sometimes cite their sources. The authors may be scholars in the field or work as freelancers. The articles contained in them are written for the educated layperson who is not necessary a specialist in the field of research. Since ordinary folks might be expected to subscribe to these journals, the prices are affordable. Examples of substantive journals are National Geographic and Scientific American .
Popular journals are attractive and have eye appeal.
They usually have many advertisements paying the bills and are, therefore, very affordable. The authors rarely, if ever, cite their sources. Examples of popular journals are Maclean's and Sports Illustrated . Sensational journals come in a variety of formats from magazines to newspapers. They assume gullibility in their audiences.