References
- Joe G. W. Retention in treatment of drug users in the DARP: 1969–1971 admissions. Studies of the Effectiveness of Treatments for Drug Abuse, Vol. 1, Evaluation of Treatments, S. B. Sells. Ballinger Press, Cambridge, Mass 1974
- Spiegel D. K., Sells S. B. Evaluation of treatments for drug users in the DARP: 1969–1971 admissions. Studies of the Effectiveness of Treatments for Drug Abuse, Vol. 1, Evaluation of Treatments, S. B. Sells. Ballinger Press, Cambridge, Mass 1974
- McRae D. J. Development of a patient typology. Studies of the Effectiveness of Treatments for Drug Abuse, Vol. 2, Research on Patients, Treatments, and Outcomes, S. B. Sells. Ballinger Press, Cambridge, Mass 1974
- Joe G. W. Patient background indices for a drug-abusing population-Development and distribution characteristics of a set of patient background index measures, based on the DARP population admitted to treatment between June 1969 and June 1971. Studies of the Effectiveness of Treatments for Drug Abuse, Vol. 2, Research on Patients, Treatments, and Outcomes, S. B. Sells. Ballinger Press, Cambridge, Mass 1974