APA-referens (7:e uppl.)

IMS Press. (1987). Gale directory of publications. Gale Research.

Chicago-referens (17:e uppl.)

IMS Press. Gale Directory of Publications. Detroit, Mich.: Gale Research, 1987.

MLA-referens (8:e uppl.)

IMS Press. Gale Directory of Publications. Gale Research, 1987.