Ditson, Oliver. The Librettos of Richard Wagner. New York: Crown Publishers,
1938.
Gregor-Dellin, Martin. Richard Wagner: His Life, His Work, His Century. New York:
Harcourt, Brace, Jovanovich, 1983.
Hatto, A. T.. The Nibelungenlied. Harmondsworth, Middlesex, England: Penguin
Books Ltd., 1987.
Maud, Constance. Wagner’s Heroes. London, England: Edward Arnold Publishers,
1896.
Maud, Constance. Wagner’s Heroines. London, England: Edward Arnold
Publishers, 1896.
Morgenstern, Sam. Composers on Music: An Anthology of Composers’ Writings.
New York: Pantheon Books Inc., 1956
Wagner, Richard. Das Rheingold. The Cleveland Orchestra – cond. Christoph von
Dohnanyi. New York: The Decca Record Co., 1995