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, Henley: 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.