1. Carson , E. Anderson , E. 2016 Prisoners in 2015 US Department of Justice, Bureau of Justice Statistics https://www.bjs.gov/content/pub/pdf/p15.pdf
2. Institute for Criminal Policy Research World prison brief http://www.prisonstudies.org/highest-to-lowest/prison_Population_rate?field_region_taxonomy_tid=All
3. Kaeble , D. Glaze , L. 2016 Correctional populations in the United States, 2015 US Department of Justice, Office of Justice Programs, Bureau of Justice Statistics https://www.bjs.gov/content/pub/pdf/cpus15.pdf
4. Minton , T. D. Zeng , Z. 2016 Jail inmates in 2015 US Department of Justice, Office of Justice Programs, Bureau of Justice Statistics
5. National Incident-Based Reporting System (NIBRS) 2015 FBI releases 2015 crime statistics from the National Incident-Based Reporting System, encourages transition U.S. Department of Justice - Federal Bureau of Investigation, Released Fall 2016 https://ucr.fbi.gov/nibrs/2015/resource-pages/nibrs-2015_summary_final-1.pdf