APA (7th ed.) Citation

Gregorio VII, P., & Cowdrey, H. E. J. (1972). The epistolae vagantes of Pope Gregory VII. At the Clarendon Press.

Chicago Style (17th ed.) Citation

Gregorio VII, Papa, and H. E. J. Cowdrey. The Epistolae Vagantes of Pope Gregory VII. Oxford: At the Clarendon Press, 1972.

MLA (9th ed.) Citation

Gregorio VII, Papa, and H. E. J. Cowdrey. The Epistolae Vagantes of Pope Gregory VII. At the Clarendon Press, 1972.