Cita APA (7a ed.)

Worrall, J. L., & Schmalleger, F. (2013). Policing. Pearson.

Cita Chicago Style (17a ed.)

Worrall, John L., y Frank Schmalleger. Policing. Boston Munich [u.a.]: Pearson, 2013.

Cita MLA (8a ed.)

Worrall, John L., y Frank Schmalleger. Policing. Pearson, 2013.