Dyfyniad APA

Luck, D. J., & Day, G. S. (1982). Marketing research: : 6th ed (6th ed.). Prentice-Hall of India.

Dyfyniad Arddull Chicago

Luck, David J., and George S. Day. Marketing Research: : 6th Ed. 6th ed. New Jersey: Prentice-Hall of India, 1982.

Dyfyniad MLA

Luck, David J., and George S. Day. Marketing Research: : 6th Ed. 6th ed. Prentice-Hall of India, 1982.

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