APA (7th ed.) Citation

Blitzstein, M., & Hellman, L. (1954). Regina: An opera. Chappell/Intersong.

Chicago Style (17th ed.) Citation

Blitzstein, Marc, and Lillian Hellman. Regina: An Opera. [New York]: Chappell/Intersong, 1954.

MLA (9th ed.) Citation

Blitzstein, Marc, and Lillian Hellman. Regina: An Opera. Chappell/Intersong, 1954.