APA

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

Chicago

Abrahamsen Rita, Williams Michael C, . 2011. Security beyond the state : Private security in international politics. Cambridge: Cambridge University Press.

Harvard

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

MLA

Abrahamsen Rita, Williams Michael C, . Security beyond the state : Private security in international politics. Cambridge: Cambridge University Press. 2011.