Tschohl, J. (1997). Achieving excellence through customer service. Jaico.
芝加哥风格引文Tschohl, John. Achieving Excellence Through Customer Service. Bombay: Jaico, 1997.
MLA引文Tschohl, John. Achieving Excellence Through Customer Service. Jaico, 1997.
警告：这些引文格式不一定是100％准确.