APA (7th ed.) Citation

Kaiser, J., & Kessler, C. (1987). Who's who in Mozart's operas: From Alfonso to Zerlina (1st American ed.). Schirmer Books.

Chicago Style (17th ed.) Citation

Kaiser, Joachim, and Charles Kessler. Who's Who in Mozart's Operas: From Alfonso to Zerlina. 1st American ed. New York: Schirmer Books, 1987.

MLA (9th ed.) Citation

Kaiser, Joachim, and Charles Kessler. Who's Who in Mozart's Operas: From Alfonso to Zerlina. 1st American ed. Schirmer Books, 1987.