APA引文

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 [u.a.]: Routledge & Kegan Paul, 1979.

MLA引文

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

警告：這些引文格式不一定是100％准確.