APA-referens (7:e uppl.)

(1988). Encyclopedia of business information sources (7th ed.). Gale Research.

Chicago-referens (17:e uppl.)

Encyclopedia of Business Information Sources. 7th ed. Detroit, Mich: Gale Research, 1988.

MLA-referens (9:e uppl.)

Encyclopedia of Business Information Sources. 7th ed. Gale Research, 1988.