APA-referens (7:e uppl.)

Zikmund, W. G. (2003). Business Research Methods (3rd.). Thomson Learning.

Chicago-referens (17:e uppl.)

Zikmund, William G. Business Research Methods. 3rd. New Delhi: Thomson Learning, 2003.

MLA-referens (9:e uppl.)

Zikmund, William G. Business Research Methods. 3rd. Thomson Learning, 2003.