Adams, R. (2004). Watership down. Penguin Books.
Dyfyniad Arddull ChicagoAdams, Richard. Watership Down. New York: Penguin Books, 2004.
Dyfyniad MLAAdams, Richard. Watership Down. Penguin Books, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.