Sharp, D. E. (2003). Call Center Operation: Design, operation, and maintenance. Amsterdam: Digital Press.
Chicago-стиль цитированияSharp, Duane E. Call Center Operation: Design, Operation, and Maintenance. Amsterdam: Digital Press, 2003.
MLA-цитированиеSharp, Duane E. Call Center Operation: Design, Operation, and Maintenance. Amsterdam: Digital Press, 2003.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.