Skogan, W. G., & Hartnett, S. M. (1997). Community policing, Chicago style. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Skogan, Wesley G., agus Susan M. Hartnett. Community Policing, Chicago Style. New York ; London: Oxford University Press, 1997.
Lua MLA (9ú heag.)Skogan, Wesley G., agus Susan M. Hartnett. Community Policing, Chicago Style. Oxford University Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.