Woods, D. W., & Twohig, M. P. (2008). Trichotillomania: An ACT-enhanced behavior therapy approach : workbook. Oxford University Press.

Woods, Douglas W., and Michael P. Twohig. Trichotillomania: An ACT-enhanced Behavior Therapy Approach : Workbook. New York ; Oxford: Oxford University Press, 2008.

Woods, Douglas W., and Michael P. Twohig. Trichotillomania: An ACT-enhanced Behavior Therapy Approach : Workbook. Oxford University Press, 2008.