1. Cognitive therapy versus applied relaxation as treatment of generalizes anxiety disorder;Arntz;Behaviour Research and Therapy,2003
2. Psychological treatments of panic disorder without agoraphobia: Cognitive therapy versus applied relaxation;Arntz;Behaviour Research and Therapy,1996
3. Arrindell, W. A., de Groot, P. M., & Walburg, J. A. (1984). De schaal voor interpersoonlijk gedrag: SIG, handleiding/Deel I. Lisse: Swets & Zeitlinger.
4. Arrindell, W.A., & Ettema, J.H.M. (1986). SCL-90, Handleiding bij een multidimensionele psychopathologie indicator [Manual of the Dutch version of the Symptom Checklist]. Lisse: Swets & Zeitlinger.
5. Cognitive therapy of depression;Beck,1980