Dyfyniad APA

Zemke, R., & Woods, J. A. (1999). Best practices in customer service (1st AMACOM ed.). AMACOM.

Dyfyniad Arddull Chicago

Zemke, Ron, and John A. Woods. Best Practices in Customer Service. 1st AMACOM ed. New York: AMACOM, 1999.

Dyfyniad MLA

Zemke, Ron, and John A. Woods. Best Practices in Customer Service. 1st AMACOM ed. AMACOM, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.