एपीए उद्धरण

Denton, D. K. (1990). How to give quality service to your customers. Universal.

शिकागो स्टाइल उद्धरण

Denton, D. Keith. How to Give Quality Service to Your Customers. New Delhi: Universal, 1990.

एमएलए उद्धरण

Denton, D. Keith. How to Give Quality Service to Your Customers. Universal, 1990.