Cita APA (7a ed.)

Crank, J. (1987). Professionalism among police chiefs. University Microfilms Internat.

Cita Chicago Style (17a ed.)

Crank, John. Professionalism Among Police Chiefs. Ann Arbor, Mich: University Microfilms Internat, 1987.

Cita MLA (9a ed.)

Crank, John. Professionalism Among Police Chiefs. University Microfilms Internat, 1987.