Hayes, Steven C., Kirk Strosahl and Kelly G. Wilson. Acceptance and Commitment Therapy: An Experiential Approach to Behavior Change. New York: Guilford, 1999.
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Hayes, Steven C., Kelly G. Wilson, E. V. Gifford, Victoria Follette and Kirk Strosahl. Experiential avoidance and behavioral disorders: A functional dimensional approach to diagnosis and treatment. Journal of Consulting and Clinical Psychology, 64(6), 1996: 1152–1168.