Jain, P. C. (1989). Marketing research management, Vol.1.
Chicago Style aipamenaJain, P C. Marketing Research Management, Vol.1. Akashdeep Publishing House: New Delhi, 1989.
MLA aipamenaJain, P C. Marketing Research Management, Vol.1. 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.