Marx, G. T. (1988). Undercover: Police surveillance in America. University of California Press.
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Dyfyniad Arddull Chicago
Marx, Gary T. Undercover: Police Surveillance in America. Berkeley: University of California Press, 1988.
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Dyfyniad MLA
Marx, Gary T. Undercover: Police Surveillance in America. University of California Press, 1988.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.