1. Evaluating recovery services: The California drug and alcohol treatment assessment (CALDATA). General report submitted to the State of California, Department of Alcohol and Drug Programs by National Opinion Research Center at the University of Chicago and Lewin‐VHI Inc, Fairfax Virginia;Gerstein DR;Sacramento: California Department of Alcohol and Drug Programs,1994
2. Alcohol Drug Abuse and Mental Health Administration 1991 National Institute in Drug Abuse. Drug abuse treatment. An economical approach to addressing the drug problem in America. Rockville MD: US Department of Health and Human Services Public Health Service
3. Odyssey House. Drugs in our community. Unpublished report. Melbourne: Odyssey House.
4. RydellCR EveringhamSS.Controllingcocaine.Supply versus demand programs. Santa Monica: RAND Drug Policy Research Centre 1994.