Dyfyniad APA

Otto of Freising. (1953). The deeds of Frederick Barbarossa. New York: Columbia University Press.

Dyfyniad Arddull Chicago

Otto of Freising. The Deeds of Frederick Barbarossa. New York: Columbia University Press, 1953.

Dyfyniad MLA

Otto of Freising. The Deeds of Frederick Barbarossa. New York: Columbia University Press, 1953.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.