APA

Spegele Roger D,, . (1996). Political realism in international theory. Cambridge: Cambridge University Press.

Chicago

Spegele Roger D,, . 1996. Political realism in international theory. Cambridge: Cambridge University Press.

Harvard

Spegele Roger D,, . (1996). Political realism in international theory. Cambridge: Cambridge University Press.

MLA

Spegele Roger D,, . Political realism in international theory. Cambridge: Cambridge University Press. 1996.