References
- Ball J. C. The reliability and validity of interview data obtained from 59 narcotic drug addicts. Am. J. Sociology 1967; 72: 650–654
- Hollingshead A. B., Redlich F. C. Social Class and Menial Illness. Wiley, New York 1958
- U.S. Congress. Narcotic Addict Rehabilitation Act of 1966. Public Law 89–793, November 8, 1966