APA (7th ed.) Citation

Housley, N. (1986). The Avignon papacy and the Crusades, 1305-1378. Clarendon Press.

Chicago Style (17th ed.) Citation

Housley, Norman. The Avignon Papacy and the Crusades, 1305-1378. Oxford: Clarendon Press, 1986.

MLA (9th ed.) Citation

Housley, Norman. The Avignon Papacy and the Crusades, 1305-1378. Clarendon Press, 1986.

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