1. APA Dictionary of Psychology. Washington, DC: American Psychological Association; 2007.
2. Beck AT. Cognitive therapy. A 30-year retrospective. Am Psychol. 1991;46(4):368–75.
3. Dobson KSD, D.J.A. Historical and filosophical bases of the cognitive -behavioral therapies. In: Handbook of cognitive-behavioral therapies. Third ed. New York: Guilford press; 2009.
4. Epp AM, Dobson KS. The evidence base for cognitive-behavioral therapy. In: Handbook of cognitive-behavioral therapies. Third ed. New York: Guilford press; 2009.
5. Shafran RC, Clark DM, Fairburn CG, Arntz A, Barlow DH, Ehlers A, Freeston M, Garety PA, Hollon SD, Ost LG, Salkovskis PM, Williams JMG, Wilson GT. Mind the gap: improving the dissemination of CBT. Behav Res Ther. 2009;47(11):902–9.