1. Professional psychology and private health services: developing trends in the federal Republic of Germany;BRENGELMANN;American Psychologist,1986
2. DIVISION OF CLINICAL PSYCHOLOGY (1990) Clinical Psychology Europe (special issue of Clinical Psychology Forum). Leicester: The BPS
3. American psychology in a cross-cultural context;DUECK;Journal of Psychology and Theology,1983
4. GILGEN, A. R. , and GILGEN, C. K. (1987) International Handbook of Psychology. New York: Greenwood Press
5. Licensure/certification of psychologists in North America;HILL;News from European Federation of Professional Psychologists’ Associations,1990