Cita APA (7a ed.)

Duncan, B. L. (2010). The heart & soul of change: Delivering what works in therapy (Second edition.). American Psychological Association.

Cita Chicago Style (17a ed.)

Duncan, Barry L. The Heart & Soul of Change: Delivering What Works in Therapy. Second edition. Washington: American Psychological Association, 2010.

Cita MLA (9a ed.)

Duncan, Barry L. The Heart & Soul of Change: Delivering What Works in Therapy. Second edition. American Psychological Association, 2010.