APA-referens (7:e uppl.)

Wills, G. (1967). Marketing through research ([1st ed.].). Pergamon Press.

Chicago-referens (17:e uppl.)

Wills, Gordon. Marketing Through Research. [1st ed.]. Oxford, New York: Pergamon Press, 1967.

MLA-referens (8:e uppl.)

Wills, Gordon. Marketing Through Research. [1st ed.]. Pergamon Press, 1967.