APA (7th ed.) Citation

Duncan, B. L. (2010). The heart and soul of change: Delivering what works in therapy (2nd ed.). American Psychological Association.

Chicago Style (17th ed.) Citation

Duncan, Barry L. The Heart and Soul of Change: Delivering What Works in Therapy. 2nd ed. Washington, D.C.: American Psychological Association, 2010.

MLA (9th ed.) Citation

Duncan, Barry L. The Heart and Soul of Change: Delivering What Works in Therapy. 2nd ed. American Psychological Association, 2010.