Cita APA (7a ed.)

Stallion, M., & Wall, D. (1999). The British police: Police forces and chief officers, 1829 - 2000. Police History Society.

Cita Chicago Style (17a ed.)

Stallion, Martin, y David Wall. The British Police: Police Forces and Chief Officers, 1829 - 2000. Bramshill: Police History Society, 1999.

Cita MLA (8a ed.)

Stallion, Martin, y David Wall. The British Police: Police Forces and Chief Officers, 1829 - 2000. Police History Society, 1999.