Freemantle, D. (1993). Incredible customer service: The final test. London: McGraw-Hill.
シカゴスタイル引用形Freemantle, David. Incredible Customer Service: The Final Test. London: McGraw-Hill, 1993.
MLA引用形式Freemantle, David. Incredible Customer Service: The Final Test. London: McGraw-Hill, 1993.
警告: この引用は必ずしも正確ではありません.