Lua APA (7ú heag.)
Punch, M. (2007). Zero tolerance policing. Policy Press.
Lua i Stíl Chicago (17ú heag.)
Punch, Maurice. Zero Tolerance Policing. Bristol, UK: Policy Press, 2007.
Lua MLA (9ú heag.)
Punch, Maurice. Zero Tolerance Policing. Policy Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.