Cita APA (7a ed.)

Langworthy, R. H., & Travis, L. F. (1994). Policing in America: A balance of forces. Macmillan [u.a.].

Cita Chicago Style (17a ed.)

Langworthy, Robert H., y Lawrence F. Travis. Policing in America: A Balance of Forces. New York: Macmillan [u.a.], 1994.

Cita MLA (8a ed.)

Langworthy, Robert H., y Lawrence F. Travis. Policing in America: A Balance of Forces. Macmillan [u.a.], 1994.