Cita APA (7a ed.)

Abrahamsen, R., & Williams, M. C. (2011). Security beyond the state: Private security in international politics. Cambridge University Press.

Cita Chicago Style (17a ed.)

Abrahamsen, Rita, y Michael C. Williams. Security Beyond the State: Private Security in International Politics. Cambridge, UK ; New York: Cambridge University Press, 2011.

Cita MLA (8a ed.)

Abrahamsen, Rita, y Michael C. Williams. Security Beyond the State: Private Security in International Politics. Cambridge University Press, 2011.