Cita APA (7th ed.)
Duby, G. (1985). William Marshal: The flower of chivalry. Pantheon Books.
Cita Chicago (17th ed.)
Duby, Georges. William Marshal: The Flower of Chivalry. New York: Pantheon Books, 1985.
Cita MLA (9th ed.)
Duby, Georges. William Marshal: The Flower of Chivalry. Pantheon Books, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.