1. Underreporting of homicides by police in the United States, 1976–2013;C Loftin;Homicide Stud,2017
2. Measuring homicide by police officers;LW Sherman;J Crim Law Criminol,1979
3. When police kill;FE Zimring,2017
4. Banks D, Couzens L, Blanton C, Cribb D. Arrest-Related Deaths program assessment. Washington (DC): Bureau of Justice Statistics; 2015 [cited 2017 Sep 1]. http://www.bjs.gov/content/pub/pdf/ardpatr.pdf.
5. The Counted: people killed by police in the US—database. The Guardian; 2016 [cited 2016 Nov 1]. http://www.theguardian.com/thecounted.