Cita APA (7a ed.)

Langworthy, R. H., & Travis, L. F. (2003). Policing in America: A balance of forces (3. ed.). Prentice Hall.

Cita Chicago Style (17a ed.)

Langworthy, Robert H., y Lawrence F. Travis. Policing in America: A Balance of Forces. 3. ed. Upper Saddle River, NJ: Prentice Hall, 2003.

Cita MLA (8a ed.)

Langworthy, Robert H., y Lawrence F. Travis. Policing in America: A Balance of Forces. 3. ed. Prentice Hall, 2003.