APA (7th ed.) Citation

Cowdrey, H. E. J. (1998). Pope Gregory VII: 1073 - 1085 (1. publ.). Clarendon Press.

Chicago Style (17th ed.) Citation

Cowdrey, H. E. J. Pope Gregory VII: 1073 - 1085. 1. publ. Oxford [u.a.]: Clarendon Press, 1998.

MLA (9th ed.) Citation

Cowdrey, H. E. J. Pope Gregory VII: 1073 - 1085. 1. publ. Clarendon Press, 1998.