1. American Psychiatric Association (1987).Diagnostic and statistical manual of mental disorders (3rd ed., rev.). Washington, DC: APA.
2. Anastasi, A. (1986). Evolving concepts of test evaluation.Annual Review of Psychology, 37, 1?15.
3. Beck, A. T., Rush, A. J., Shaw, B. F., & Emery, G. (1979).Cognitive therapy of depression. New York: Guilford.
4. Beck, A. T., Epstein, N., Brown, G., & Steer, R. A. (1988). An inventory for measuring clinical anxiety: Psychometric properties.Journal of Consulting and Clinical Psychology, 56, 893?897.
5. Black, A. (1974). The natural history of obsessional neurosis. In H. R. Beech (Ed.),Obsessional states (pp. 19?54). London: Methuen.