Dyfyniad APA

Zikmund, W. G. (2010). Essentials of marketing research fourth edition. South-Western Cengage Learning.

Dyfyniad Arddull Chicago

Zikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.

Dyfyniad MLA

Zikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.

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