1. American Cancer Society. Health tips: The process of quitting smoking. Houston: 1993.
2. American Psychiatric Association. Diagnostic and statistical manual of mental disorders 3rd ed. rev. Washington DC: Author 1987.
3. Bradshaw J. The family. New York: Harcourt Brace 1992.
4. Froberg W. Slife B. Overcoming obstacles to the implementation of Yalom's model of inpatient group psychotherapy lnt J Group Psychother 1987; 37(3):371-388.
5. Kaplan H.I. Comprehensive group psychotherapy. Baltimore: Williams & Wilkins 1993.