References
- Ball J. C. The reliability and validity of interview data obtained from 59 narcotic drug addicts. Am. J. Sociology 1967; 72: 650–654
- Stephens R. The truthfulness of addict respondents in research projects. Int. J. Addict. 1972; 7(3)549–558
- Wolf S., Foxwell N. H., Kurland A. A. Incidence of drinking among hospitalized convalescing alcoholics. Q. J. Stud. Alcohol 1965; 26(2)256–263