Cita APA (7a ed.)

Cowdrey, H. E. J. (1970). The Cluniacs and the Gregorian reform. Clarendon P.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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