Cita APA (7a ed.)

Sousa, W. H. (2003). Crime reduction in New York City: The impact of the NYPD.

Cita Chicago Style (17a ed.)

Sousa, William Henry. Crime Reduction in New York City: The Impact of the NYPD. 2003.

Cita MLA (8a ed.)

Sousa, William Henry. Crime Reduction in New York City: The Impact of the NYPD. 2003.