APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.