Sharp, D. E. (2003). Call Center Operation: Design, operation, and maintenance. Amsterdam: Digital Press.
Chicago ZitierstilSharp, Duane E. Call Center Operation: Design, Operation, and Maintenance. Amsterdam: Digital Press, 2003.
MLA ZitierstilSharp, Duane E. Call Center Operation: Design, Operation, and Maintenance. Amsterdam: Digital Press, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.