Dyfyniad APA

Luck, D. J., & Day, G. S. (1981). Marketing research/5e. Prentice-Hall of India.

Dyfyniad Arddull Chicago

Luck, David J., and George S. Day. Marketing Research/5e. New Delhi: Prentice-Hall of India, 1981.

Dyfyniad MLA

Luck, David J., and George S. Day. Marketing Research/5e. Prentice-Hall of India, 1981.

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