Cita APA (7a ed.)

Murphy, M. A. a., & Perkins, T. (2010). Hard goals: The secrets to getting from where you are to where you want to be ([First edition].). McGraw Hill-Ascent Audio.

Cita Chicago Style (17a ed.)

Murphy, Mark A. author, y Tom Perkins. Hard Goals: The Secrets to Getting from Where You Are to Where You Want to Be. [First edition]. [Place of publication not identified]: McGraw Hill-Ascent Audio, 2010.

Cita MLA (9a ed.)

Murphy, Mark A. author, y Tom Perkins. Hard Goals: The Secrets to Getting from Where You Are to Where You Want to Be. [First edition]. McGraw Hill-Ascent Audio, 2010.