APA (7th ed.) Citation

Van Cleve, T. C. (1972). The Emperor Frederick II of Hohenstaufen, immutator mundi / by Thomas Curtis Van Cleve. Clarendon Press.

Chicago Style (17th ed.) Citation

Van Cleve, Thomas Curtis. The Emperor Frederick II of Hohenstaufen, Immutator Mundi / by Thomas Curtis Van Cleve. Oxford: Clarendon Press, 1972.

MLA (9th ed.) Citation

Van Cleve, Thomas Curtis. The Emperor Frederick II of Hohenstaufen, Immutator Mundi / by Thomas Curtis Van Cleve. Clarendon Press, 1972.

Warning: These citations may not always be 100% accurate.