Cita APA (7a ed.)

Beach, R. W., & O'Leary, J. S. (2001). Defensible policies: Developing, writing, and implementing valid policies for problem oriented policing. Thomas.

Cita Chicago Style (17a ed.)

Beach, Raymond W., y James S. O'Leary. Defensible Policies: Developing, Writing, and Implementing Valid Policies for Problem Oriented Policing. Springfield, Ill: Thomas, 2001.

Cita MLA (8a ed.)

Beach, Raymond W., y James S. O'Leary. Defensible Policies: Developing, Writing, and Implementing Valid Policies for Problem Oriented Policing. Thomas, 2001.