http://contextualpsychology.org  -    For ACT related references. You need to be a member of ACBS to use their resources. Membership is on a ‘pay what you think it’s worth’ basis.  

Germer, C. K., Siegel, R. D., & Fulton, P. R. (2005).Mindfulness and psychotherapy.  Guilford Press: New York.   

 Hayes, S. C., Strosahl, K. D., & Wilson, K. G. (2012). Acceptance and commitment therapy – The Process and Practice of Mindful Change. Guilford: New York.  

Hayes, S. C., &Strosahl, K. D. (2004). A practical guide to acceptance and commitment therapy. Springer: New York. 

Hayes, S. C., Follette, V. M., & Linehan, M. M. (2004). Mindfulness and acceptance – expanding the cognitive – behavioural tradition. Guilford: New York.  

Luoma, J. B., Hayes, S.andWalser (2007). Learning ACT: an acceptance and commitment therapy skills-training manual for therapists. New Harbinger