Authors are specialists in a certain field or industry.

Authors often mention sources, but rarely formally cite them in bibliographies.

There is no peer review process.

Articles give practical information to people in an industry.

Intended audience includes people in the industry or people seeking employment in the industry.

Some illustrations are given, usually charts, graphs, etc.

Authors use jargon of the industry.

Other examples:
Advertising Age
Publisher's Weekly
Child Care Information Exchange