Παραπομπή APA

Katz, B. (2004). How to turn customer service into customer sales. Jaico.

Παραπομπή Chicago Style

Katz, Bernard. How to Turn Customer Service into Customer Sales. New Delhi: Jaico, 2004.

Παραπομπή MLA

Katz, Bernard. How to Turn Customer Service into Customer Sales. Jaico, 2004.