Crump, G. C., & Jacob, E. F. The legacy of the Middle Ages. Oxford University Press.
Chicago-Zitierstil (17. Ausg.)Crump, G. C., 与 E. F. Jacob. The Legacy of the Middle Ages. London: Oxford University Press.
MLA-Zitierstil (8. Ausg.)Crump, G. C., 与 E. F. Jacob. The Legacy of the Middle Ages. Oxford University Press.
警告：这些引文格式不一定是100％准确.