Popular periodicals come in many formats, although often slick and attractive in appearance with lots of color graphics (photographs, drawings, etc.).
These publications do not cite sources in a bibliography. Information published in popular periodicals is often second or third hand and the original source is rarely mentioned.
Articles are usually very short and written in simple language.
The main purpose of popular periodicals is to entertain the reader, to sell products (their own or their advertisers), or to promote a viewpoint.