Zemke, R., & Woods, J. A. (1999). Best practices in customer service (1st AMACOM ed.). AMACOM.
Chicago Style (17. basım) AtıfZemke, Ron, ve John A. Woods. Best Practices in Customer Service. 1st AMACOM ed. New York: AMACOM, 1999.
MLA (9th ed.) AtıfZemke, Ron, ve John A. Woods. Best Practices in Customer Service. 1st AMACOM ed. AMACOM, 1999.
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