Cita APA (7a ed.)

Wilson, J. Q., & Boland, B. The effect of the police on crime. National Institute of Law Enforcement and Criminal Justice.

Cita Chicago Style (17a ed.)

Wilson, James Q., y Barbara Boland. The Effect of the Police on Crime. Rockville, Md: National Institute of Law Enforcement and Criminal Justice.

Cita MLA (9a ed.)

Wilson, James Q., y Barbara Boland. The Effect of the Police on Crime. National Institute of Law Enforcement and Criminal Justice.