Cita APA (7th ed.)

Peppers. Don ; Rogers, M. (2005). Return on Customer. Happer Business.

Cita Chicago (17th ed.)

Peppers. Don ; Rogers, Martha. Return on Customer. New York: Happer Business, 2005.

Cita MLA (9th ed.)

Peppers. Don ; Rogers, Martha. Return on Customer. Happer Business, 2005.