APA (7th ed.) Citation

Wagner, R. (1960). The ring of the Nibelung. E. P. Dutton.

Chicago Style (17th ed.) Citation

Wagner, Richard. The Ring of the Nibelung. New York: E. P. Dutton, 1960.

MLA (8th ed.) Citation

Wagner, Richard. The Ring of the Nibelung. E. P. Dutton, 1960.