Cohen, R. (1975). Working with police agencies. Human Sciences Pr.
Cita Chicago Style (17a ed.)Cohen, Robert. Working with Police Agencies. New York: Human Sciences Pr, 1975.
Cita MLA (8a ed.)Cohen, Robert. Working with Police Agencies. Human Sciences Pr, 1975.
Precaución: Estas citas no son 100% exactas.