References
- Garfield E. F., Boering M. L., Smith J. P. Marihuana use on a campus: spring 1969. Intern. J. Addictions 1971; 6: 487–491
- Goldstein J. The Social Psychology of Student Drug Use. Department of Psychology, Carnegie-Mellon University, Pittsburgh 1970
- Health, Education, and Welfare Report to Congress. Marihuana and Health. U.S. Government Printing Office, Washington, D.C. 1972
- McKenzie J. D. Trends in marihuana use among undergraduate students at the University of Maryland. Counseling Center, University of Maryland, College Park, Maryland 1970