Style de citation APA

Bisson, T. N. (2009). The crisis of the twelfth century: Power, lordship, and the origins of European government. Princeton Univ. Press.

Style de citation Chicago

Bisson, Thomas N. The Crisis of the Twelfth Century: Power, Lordship, and the Origins of European Government. Princeton, NJ [u.a.]: Princeton Univ. Press, 2009.

Style de citation MLA

Bisson, Thomas N. The Crisis of the Twelfth Century: Power, Lordship, and the Origins of European Government. Princeton Univ. Press, 2009.