Economy, P. (2004). Customer service secrets. New Delhi: Tata McGraw-Hill Publishing Company Ltd.
シカゴスタイル引用形Economy, Peter. Customer Service Secrets. New Delhi: Tata McGraw-Hill Publishing Company Ltd, 2004.
MLA引用形式Economy, Peter. Customer Service Secrets. New Delhi: Tata McGraw-Hill Publishing Company Ltd, 2004.
警告: この引用は必ずしも正確ではありません.