APA (7th ed.) Zitazioa
Chisnal Peter M. (1991). The essence of marketing research. Prentice Hall India.
Chicago Style (17th ed.) Zitazioa
Chisnal Peter M. The Essence of Marketing Research. New Delhi: Prentice Hall India, 1991.
MLA (9th ed.) Zitazioa
Chisnal Peter M. The Essence of Marketing Research. Prentice Hall India, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.