APA (7th ed.) Citation

Richards, J. (1979). The popes and the papacy in the early Middle Ages, 476-752. Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Richards, Jeffrey. The Popes and the Papacy in the Early Middle Ages, 476-752. London ; Boston: Routledge & Kegan Paul, 1979.

MLA (9th ed.) Citation

Richards, Jeffrey. The Popes and the Papacy in the Early Middle Ages, 476-752. Routledge & Kegan Paul, 1979.