1. How and why are some therapists better than others?: understanding therapist effects Washington, DC : American Psychological Association, [2017] COUN300 CP524
2. Bergin and Garfield's handbook of psychotherapy and behavior change Hoboken, NJ : John Wiley & Sons, c2013. CP524
3. What works for whom?: a critical review of psychotherapy research Roth, Anthony. New York : Guilford Press, c2006. CP524
