Dyfyniad APA

Chisnall, P. M. (1991). Essence of marketing research. Prentice hall of India.

Dyfyniad Arddull Chicago

Chisnall, Peter M. Essence of Marketing Research. New Delhi: Prentice hall of India, 1991.

Dyfyniad MLA

Chisnall, Peter M. Essence of Marketing Research. Prentice hall of India, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.