APA (7th ed.) Citation

Dixon, M., & Adamson, B. (2013). The Challenge sale: How to take control of the customer conversation. Portfolio/Penguin.

Chicago Style (17th ed.) Citation

Dixon, Matthew, and Brent Adamson. The Challenge Sale: How to Take Control of the Customer Conversation. London: Portfolio/Penguin, 2013.

MLA (9th ed.) Citation

Dixon, Matthew, and Brent Adamson. The Challenge Sale: How to Take Control of the Customer Conversation. Portfolio/Penguin, 2013.