APA (7th ed.) Citation

Gierke, O. v. (1987). Political theories of the Middle Age (1st paperback ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Gierke, Otto von. Political Theories of the Middle Age. 1st paperback ed. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.

MLA (9th ed.) Citation

Gierke, Otto von. Political Theories of the Middle Age. 1st paperback ed. Cambridge University Press, 1987.