1. An investigation of decrements of anxiety responses during systematic desensitization;Agras;Behaviour Research and Therapy,1965
2. American Psychiatric Association (1987). Diagnostic and statistical manual of mental disorders (3rd ed. rev.). Washington, DC: Author.
3. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author.
4. Barlow, D.H. (1988). Anxiety and its disorders: The nature and treatment of anxiety and panic. New York: Guilford.
5. Some comments on therapy analogue research with small animal “phobias”;Bernstein;Journal of Behavior Therapy and Experimental Psychiatry,1971