Cita APA (7a ed.)

Bartollas, C., & Hahn, L. D. (1999). Policing in America. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Bartollas, Clemens, y Larry D. Hahn. Policing in America. Boston [u.a.]: Allyn and Bacon, 1999.

Cita MLA (9a ed.)

Bartollas, Clemens, y Larry D. Hahn. Policing in America. Allyn and Bacon, 1999.