Cita APA (7a ed.)

Coffey, A. (1990). Law enforcement: A human relations approach. Prentice Hall.

Cita Chicago Style (17a ed.)

Coffey, Alan. Law Enforcement: A Human Relations Approach. Englewood Cliffs, NJ: Prentice Hall, 1990.

Cita MLA (8a ed.)

Coffey, Alan. Law Enforcement: A Human Relations Approach. Prentice Hall, 1990.