Tschohl, J. (1997). Achieving excellence through customer service. Jaico.
Chicagoスタイル(17版)引用形式Tschohl, John. Achieving Excellence Through Customer Service. Bombay: Jaico, 1997.
MLA(9版)引用形式Tschohl, John. Achieving Excellence Through Customer Service. Jaico, 1997.
警告: この引用は必ずしも正確ではありません.