Cita APA (7a ed.)

Crank, J. P., & Crank, J. P. (2011). Policing, toward an unknown future. Routledge.

Cita Chicago Style (17a ed.)

Crank, John P., y John P. Crank. Policing, Toward an Unknown Future. London [u.a.]: Routledge, 2011.

Cita MLA (8a ed.)

Crank, John P., y John P. Crank. Policing, Toward an Unknown Future. Routledge, 2011.