BJS. 2004. Probation and Parole in the United States, 2003. [Online]. Available: http://www.ojp.usdoj.gov/bjs/pub/pdf/ppus03.pdf [accessed December 23, 2005].
John Howard Society of Alberta. 1998. Community Corrections. [Online]. Available: http://www.johnhoward.ab.ca/PUB/C29.htm [accessed June 27, 2005].
NCPHSBBR (National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research). 1976. Research Involving Prisoners. DHEW Pub. No. (OS) 76-131. Washington, DC: U.S. Department of Health, Education, and Welfare.
Petersilia J. 2000. Challenges to prisoner reentry and parole in California. California Policy Research Center Brief Series. [Online]. Available: http://www.ucop.edu/cprc/parole.html [accessed April 4, 2006].