Cita APA (7a ed.)

Nichols, L. D. (1990). Law enforcement patrol operations: Police systems and practices. McCutchan.

Cita Chicago Style (17a ed.)

Nichols, Larry D. Law Enforcement Patrol Operations: Police Systems and Practices. Berkeley, Calif: McCutchan, 1990.

Cita MLA (9a ed.)

Nichols, Larry D. Law Enforcement Patrol Operations: Police Systems and Practices. McCutchan, 1990.