Internet sources
Bureau of Justice Statistics. http://www.ojp.usdoj.gov/bjs/
Uniform Crime Reporting. https://ucr.fbi.gov/
National Archive of Criminal Justice Data. http://www.icpsr.umich.edu/icpsrweb/NACJD/
National Criminal Justice Association. http://www.ncja.org/home
National Criminal Justice Reference Service. https://www.ncjrs.gov/
Sourcebook of Criminal Justice. http://www.albany.edu/sourcebook/
Vera Institute of Justice. https://www.vera.org/