USA. (2002). Problem-solving tips: A guide to reducing crime and disorder through problem-partnerships (Rev.). Department of Justice, Community Oriented Policing Services.
Cita Chicago Style (17a ed.)USA. Problem-solving Tips: A Guide to Reducing Crime and Disorder Through Problem-partnerships. Rev. Washington, DC: Department of Justice, Community Oriented Policing Services, 2002.
Cita MLA (9a ed.)USA. Problem-solving Tips: A Guide to Reducing Crime and Disorder Through Problem-partnerships. Rev. Department of Justice, Community Oriented Policing Services, 2002.
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