1. Bureau of Narcotics and Dangerous Drugs, Public Speaking on Drug Abuse Prevention: A Handbook for the Law Enforcement Officer, U.S. Government Printing Office, Washington, D.C., p. 3, 1970.
2. Training Models for Drug Abuse Prevention: Recommendations for the Future
3. Resnik H. S., It Starts With People: Experiences in Drug Abuse Prevention, U.S. Government Printing Office, Washington, D.C., pp. 18–42, 1979.
4. Sources of Information about “Drugs”