1. Brecher, E.Licit and illicit drugs. New York: Little, Brown & Company, 1972.
2. Brotman, R. & Suffet, F. The concept of prevention and its limitations.The Annals of the American Academy of Political and Social Science 1975,417 53?65.
3. Cabinet Committee on Drug Abuse Prevention, Treatment and Rehabilitation.Recommendations for future federal activities in drug abuse prevention. Washington, D.C.: U.S. Government Printing Office, 1977.
4. Caplan, N. & Nelson, S.D. On being useful: The nature and consequences of psychological research on social problems.American Psychologist 1973,28 199?211.
5. Cohen, A.Y.alternatives to drug abuse: Steps toward prevention. Rockville, Maryland: Alcohol, Drug Abuse and Mental Health Administration, 1975.