APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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