APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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