Crouch, S. (2007). MArketing research for managers (3rd.). Elsevier.
Chicago Style aipamenaCrouch, Sunny. MArketing Research for Managers. 3rd. New Delhi: Elsevier, 2007.
MLA aipamenaCrouch, Sunny. MArketing Research for Managers. 3rd. Elsevier, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.