APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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