Blanding, W. (1991). Customer service operations: The complete guide. AMA COM.
Chicago ZitierstilBlanding, Warren. Customer Service Operations: The Complete Guide. New York: AMA COM, 1991.
MLA ZitierstilBlanding, Warren. Customer Service Operations: The Complete Guide. AMA COM, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.