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Dyfyniad Arddull ChicagoWallace, William Vincent, Henry Fothergill Chorley, and Wilhelm Meinhold. The Amber Witch: A Grand Romantic Opera. New York: Wm. Hall, 1861.
Dyfyniad MLAWallace, William Vincent, et al. The Amber Witch: A Grand Romantic Opera. Wm. Hall, 1861.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.