Punch, M. (2007). Zero tolerance policing. Policy Press.
Cita Chicago Style (17a ed.)Punch, Maurice. Zero Tolerance Policing. Bristol, UK: Policy Press, 2007.
Cita MLA (8a ed.)Punch, Maurice. Zero Tolerance Policing. Policy Press, 2007.
Precaución: Estas citas no son 100% exactas.