APA (7th ed.) Citation

Verdi, G., Somma, A., Tracey, E., & Scribe, E. (1989). A masked ball =: Un ballo in maschera. J. Calder ; Riverrun Press.

Chicago Style (17th ed.) Citation

Verdi, Giuseppe, Antonio Somma, Edmund Tracey, and Eugène Scribe. A Masked Ball =: Un Ballo in Maschera. London : New York: J. Calder ; Riverrun Press, 1989.

MLA (9th ed.) Citation

Verdi, Giuseppe, et al. A Masked Ball =: Un Ballo in Maschera. J. Calder ; Riverrun Press, 1989.