Snow, D., & Yanovitch, T. (2010). Unleashing excellence: The complete guide to ultimate customer service (2nd ed.). John Wiley & Sons, Inc.
Chicago Style (17. basım) AtıfSnow, Dennis, ve Teri Yanovitch. Unleashing Excellence: The Complete Guide to Ultimate Customer Service. 2nd ed. Hoboken, N.J: John Wiley & Sons, Inc, 2010.
MLA (8th ed.) AtıfSnow, Dennis, ve Teri Yanovitch. Unleashing Excellence: The Complete Guide to Ultimate Customer Service. 2nd ed. John Wiley & Sons, Inc, 2010.
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