1. American Psychiatric Association (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, D.C.: Author
2. Factor analysis of symptom subtypes of obsessive compulsive disorder and their relation to personality and tic disorders;Baer;Journal of Clinical Psychiatry,1994
3. Standardized assessment of personality disorders in obsessive–compulsive disorder;Baer;Archives of General Psychiatry,1990
4. Beck, A. T., & Steer, R. A. (1987). Beck Depression Inventory manual. San Antonio, TX: The Psychological Corporation
5. Applying cluster analysis in counseling psychology research;Borgen;Journal of Counseling Psychology,1987