Chisnall, P. M. (1991). Essence of marketing research. Prentice hall of India.
Chicago Style aipamenaChisnall, Peter M. Essence of Marketing Research. New Delhi: Prentice hall of India, 1991.
MLA aipamenaChisnall, Peter M. Essence of Marketing Research. Prentice hall of India, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.