APA (7th ed.) Citation

Cowdrey, H. (1970). The cluniacs an the gregorian reform. Clarendon.

Chicago Style (17th ed.) Citation

Cowdrey, H.E.J. The Cluniacs an the Gregorian Reform. Oxford: Clarendon, 1970.

MLA (9th ed.) Citation

Cowdrey, H.E.J. The Cluniacs an the Gregorian Reform. Clarendon, 1970.