Cita APA (7a ed.)

Eklund, F., & Littlefield, B. (2015). The Sell: The secrets of selling anything to anyone. Avery.

Cita Chicago Style (17a ed.)

Eklund, Fredrik, y Bruce Littlefield. The Sell: The Secrets of Selling Anything to Anyone. New York: Avery, 2015.

Cita MLA (9a ed.)

Eklund, Fredrik, y Bruce Littlefield. The Sell: The Secrets of Selling Anything to Anyone. Avery, 2015.