Dyfyniad APA

Tull, D. S. (2002). Marketing research: Measurement & method (6th ed.). Prentice hall od India.

Dyfyniad Arddull Chicago

Tull, Donald S. Marketing Research: Measurement & Method. 6th ed. New Delhi: Prentice hall od India, 2002.

Dyfyniad MLA

Tull, Donald S. Marketing Research: Measurement & Method. 6th ed. Prentice hall od India, 2002.

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