APA استشهاد

Denton, D. K. (1992). How to give quality service to your customers. Universal book stall.

استشهاد بنمط شيكاغو

Denton, D. Keith. How to Give Quality Service to Your Customers. New Delhi: Universal book stall, 1992.

MLA استشهاد

Denton, D. Keith. How to Give Quality Service to Your Customers. Universal book stall, 1992.