Cita APA (7a ed.)

Halper, A., & Ku, R. (1975). New York City Police Department Street Crime Unit. U.S. Dept. of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice.

Cita Chicago Style (17a ed.)

Halper, Andrew, y Richard Ku. New York City Police Department Street Crime Unit. Washington, D.C: U.S. Dept. of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice, 1975.

Cita MLA (8a ed.)

Halper, Andrew, y Richard Ku. New York City Police Department Street Crime Unit. U.S. Dept. of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice, 1975.