APA (7th ed.) Citation

Sullivan, A., & Gilbert, W. S. (1939). Authentic libretti of the Gilbert and Sullivan operas. Crown publishers.

Chicago Style (17th ed.) Citation

Sullivan, Arthur, and W. S. Gilbert. Authentic Libretti of the Gilbert and Sullivan Operas. New York: Crown publishers, 1939.

MLA (9th ed.) Citation

Sullivan, Arthur, and W. S. Gilbert. Authentic Libretti of the Gilbert and Sullivan Operas. Crown publishers, 1939.