Birn, R. (2004). The effective use of market research: How to drive and focus better business decisions (4th ed.). Kogan Page.
Chicago-Zitierstil (17. Ausg.)Birn, Robin. The Effective Use of Market Research: How to Drive and Focus Better Business Decisions. 4th ed. London ; Sterling, VA: Kogan Page, 2004.
MLA-Zitierstil (9. Ausg.)Birn, Robin. The Effective Use of Market Research: How to Drive and Focus Better Business Decisions. 4th ed. Kogan Page, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.