APA (7th ed.) Citation

Weisgall, H., Johnston, D., & Pirandello, L. (1960). Six characters in search of an author. Opera in three acts. Merion Music.

Chicago Style (17th ed.) Citation

Weisgall, Hugo, Denis Johnston, and Luigi Pirandello. Six Characters in Search of an Author. Opera in Three Acts. Bryn Mawr, Pa: Merion Music, 1960.

MLA (9th ed.) Citation

Weisgall, Hugo, et al. Six Characters in Search of an Author. Opera in Three Acts. Merion Music, 1960.