Zikmund, W. G. (2010). Essentials of marketing research fourth edition. South-Western Cengage Learning.
Chicago-Zitierstil (17. Ausg.)Zikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.
MLA-Zitierstil (8. Ausg.)Zikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.