Cita APA (7a ed.)

Whalen, B., & Whalen, J. (2014). The NYPD's First Fifty Years: Politicians, Police Commissioners, and Patrolmen. Potomac Books.

Cita Chicago Style (17a ed.)

Whalen, Bernard, y Jon Whalen. The NYPD's First Fifty Years: Politicians, Police Commissioners, and Patrolmen. [Lincoln, Nebraska]: Potomac Books, 2014.

Cita MLA (8a ed.)

Whalen, Bernard, y Jon Whalen. The NYPD's First Fifty Years: Politicians, Police Commissioners, and Patrolmen. Potomac Books, 2014.