Cita APA (7th ed.)

Proctor, B. (2019). 12 Power Principles for Success. G & D Media.

Cita Chicago (17th ed.)

Proctor, Bob. 12 Power Principles for Success. New York: G & D Media, 2019.

Cita MLA (9th ed.)

Proctor, Bob. 12 Power Principles for Success. G & D Media, 2019.