Jolles, R. L. (1998). Customer centered selling: Eight steps to success from the world's best sales force. The Free Press.
Chicago-Zitierstil (17. Ausg.)Jolles, Robert L. Customer Centered Selling: Eight Steps to Success from the World's Best Sales Force. New York, NY: The Free Press, 1998.
MLA-Zitierstil (9. Ausg.)Jolles, Robert L. Customer Centered Selling: Eight Steps to Success from the World's Best Sales Force. The Free Press, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.