Citazione APA

Zemke, R., & Bell, C. (2006). Service magic: The art of amazing your customers. Corpus collosum.

Stile di citazione Chicago

Zemke, Ron, e Chip Bell. Service Magic: The Art of Amazing Your Customers. New Delhi: Corpus collosum, 2006.

Citazione MLA

Zemke, Ron, e Chip Bell. Service Magic: The Art of Amazing Your Customers. Corpus collosum, 2006.