Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.