Cita APA (7a ed.)

Wilson, C. (1999). Profitable customers (2nd.). Kogan Page.

Cita Chicago Style (17a ed.)

Wilson, Charles. Profitable Customers. 2nd. New Delhi: Kogan Page, 1999.

Cita MLA (9a ed.)

Wilson, Charles. Profitable Customers. 2nd. Kogan Page, 1999.