APA (7th ed.) Citation

Verdi, G., & Piave, F. M. (1970). Macbeth: An opera in four acts. E.F. Kalmus.

Chicago Style (17th ed.) Citation

Verdi, Giuseppe, and Francesco Maria Piave. Macbeth: An Opera in Four Acts. New York: E.F. Kalmus, 1970.

MLA (9th ed.) Citation

Verdi, Giuseppe, and Francesco Maria Piave. Macbeth: An Opera in Four Acts. E.F. Kalmus, 1970.