Chaiken, J. M., Lawless, M. W., & Stevenson, K. A. (1974). The impact of police activity on crime: Robberies on the New York City subway system. Rand report.
Cita Chicago Style (17a ed.)Chaiken, Jan M., Michael W. Lawless, y Keith A. Stevenson. "The Impact of Police Activity on Crime: Robberies on the New York City Subway System." Rand Report 1974.
Cita MLA (9a ed.)Chaiken, Jan M., et al. "The Impact of Police Activity on Crime: Robberies on the New York City Subway System." Rand Report, 1974.
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