Day, C. E. (2000). Call center operations: Profiting from teleservices. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoDay, Charles E. Call Center Operations: Profiting From Teleservices. New York: McGraw-Hill, 2000.
ציטוט MLADay, Charles E. Call Center Operations: Profiting From Teleservices. New York: McGraw-Hill, 2000.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.