Unruh, J. A. (1996). Customers Mean Business: Six Steps to Building Relationships That Last. Reading, Massachusetts: Addison-Wesley.
Chicago ZitierstilUnruh, James A. Customers Mean Business: Six Steps to Building Relationships That Last. Reading, Massachusetts: Addison-Wesley, 1996.
MLA ZitierstilUnruh, James A. Customers Mean Business: Six Steps to Building Relationships That Last. Reading, Massachusetts: Addison-Wesley, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.