Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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