APA (7th ed.) Zitazioa

Zikmund, W. G. (2008). Business research methods. Cengage Learbubg.

Chicago Style (17th ed.) Zitazioa

Zikmund, William G. Business Research Methods. New Delhi: Cengage Learbubg, 2008.

MLA (9th ed.) Zitazioa

Zikmund, William G. Business Research Methods. Cengage Learbubg, 2008.