Cita APA (7a ed.)

Ostrom, E., Parks, R. B., & Whitaker, G. P. (1977). Policing metropolitan America. National Science Foundation.

Cita Chicago Style (17a ed.)

Ostrom, Elinor, Roger B. Parks, y Gordon P. Whitaker. Policing Metropolitan America. Washington, D.C: National Science Foundation, 1977.

Cita MLA (8a ed.)

Ostrom, Elinor, et al. Policing Metropolitan America. National Science Foundation, 1977.