APA (7th ed.) Zitazioa

Bull, H. (1977). The anarchical society: A study of order in world politics. Columbia University.

Chicago Style (17th ed.) Zitazioa

Bull, Hedley. The Anarchical Society: A Study of Order in World Politics. Nueva York: Columbia University, 1977.

MLA (9th ed.) Zitazioa

Bull, Hedley. The Anarchical Society: A Study of Order in World Politics. Columbia University, 1977.