Bethel, W. (1995). 10 steps to connecting with your customers: [communication skills for selling your products, services, and ideas]. Dartnell.
Chicago-Zitierstil (17. Ausg.)Bethel, William. 10 Steps to Connecting with Your Customers: [communication Skills for Selling Your Products, Services, and Ideas]. Chicago, Ill. u.a: Dartnell, 1995.
MLA-Zitierstil (9. Ausg.)Bethel, William. 10 Steps to Connecting with Your Customers: [communication Skills for Selling Your Products, Services, and Ideas]. Dartnell, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.