Cita APA (7a ed.)

Vengel, A. A., & Haag, J. (2009). 20 minutes to a top performer: Three fast and effective conversations to motivate, develop, and engage your employees ([First edition].). McGraw Hill-Ascent Audio.

Cita Chicago Style (17a ed.)

Vengel, Alan A., y John Haag. 20 Minutes to a Top Performer: Three Fast and Effective Conversations to Motivate, Develop, and Engage Your Employees. [First edition]. [Place of publication not identified]: McGraw Hill-Ascent Audio, 2009.

Cita MLA (9a ed.)

Vengel, Alan A., y John Haag. 20 Minutes to a Top Performer: Three Fast and Effective Conversations to Motivate, Develop, and Engage Your Employees. [First edition]. McGraw Hill-Ascent Audio, 2009.