APA (7th ed.) Zitazioa
Villiers, P. (2009). Police and policing: An introduction. Waterside Press ; North American distributor, International Specialised Book Services.
Chicago Style (17th ed.) Zitazioa
Villiers, Peter. Police and Policing: An Introduction. Sherfield on Loddon, U.K. : Portland, Or., USA: Waterside Press ; North American distributor, International Specialised Book Services, 2009.
MLA (9th ed.) Zitazioa
Villiers, Peter. Police and Policing: An Introduction. Waterside Press ; North American distributor, International Specialised Book Services, 2009.
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