APA (7th ed.) Citation

Sullivan, A., Gilbert, W. S., & Treharne, B. (1980). The pirates of Penzance, or, The slave of duty. G. Schirmer.

Chicago Style (17th ed.) Citation

Sullivan, Arthur, W. S. Gilbert, and Bryceson Treharne. The Pirates of Penzance, or, The Slave of Duty. New York: G. Schirmer, 1980.

MLA (9th ed.) Citation

Sullivan, Arthur, et al. The Pirates of Penzance, or, The Slave of Duty. G. Schirmer, 1980.