Cita APA (7th ed.)

Dixon, M., & Adamson, B. (2011). The challenger sale: Taking control of the customer conversation. Portfolio/Penguin.

Cita Chicago (17th ed.)

Dixon, Matthew, i Brent Adamson. The Challenger Sale: Taking Control of the Customer Conversation. New York: Portfolio/Penguin, 2011.

Cita MLA (9th ed.)

Dixon, Matthew, i Brent Adamson. The Challenger Sale: Taking Control of the Customer Conversation. Portfolio/Penguin, 2011.