1. Arrestee Drug Abuse Monitoring (ADAM), 2003. 2000 Arrestee Drug Abuse Monitoring: Annual Report, NCJ 193013. National Institutes of Justice, Washington, DC. Accessed on 5 May 2004, from http://nij.ncjrs.org/publications/pubs_db.asp.
2. Race, drugs, and policing: understanding disparities in drug delivery arrests;Beckett;Criminology,2006
3. Ethnography: A Research Tool for Policymakers in the Drug and Alcohol Fields,1980
4. Cognitive processes used by survey respondents to answer behavioral frequency questions;Blair;J. Consumer Res.,1987
5. The Crime Drop in America,,2006