Dyfyniad APA
Hildegard, S., Baird, J. L., & Ehrman, R. K. (1998). The letters of Hildegard of Bingen. Oxford University Press.
Dyfyniad Arddull Chicago
Hildegard, Saint, Joseph L. Baird, and Radd K. Ehrman. The Letters of Hildegard of Bingen. New York: Oxford University Press, 1998.
Dyfyniad MLA
Hildegard, Saint, et al. The Letters of Hildegard of Bingen. Oxford University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.