References
- Berg D. F. The non-medical use of dangerous drugs in the United States: A comprehensive view. Int. J. Addict. 1970; 5(4)
- Henley J. R., Adams L. D. Marijuana use in post-collegiate cohorts: Correlates of use, prevalence patterns, and factors associated with cessation. Soc. Problems 1973; 20(4)514–520