Peterson, V. W. (1957). Issues and Problems in Metropolitan Area Police Services. The journal of criminal law, criminology and police science. doi:10.2307/1139487
Cita Chicago Style (17a ed.)Peterson, Virgil W. "Issues and Problems in Metropolitan Area Police Services." The Journal of Criminal Law, Criminology and Police Science 1957. https://doi.org/10.2307/1139487.
Cita MLA (9a ed.)Peterson, Virgil W. "Issues and Problems in Metropolitan Area Police Services." The Journal of Criminal Law, Criminology and Police Science, 1957, https://doi.org/10.2307/1139487.
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