APA (7th ed.) Citation

Martin, G. W. (1984). The companion to twentieth-century opera (1. publ.). Dodd, Mead.

Chicago Style (17th ed.) Citation

Martin, George Whitney. The Companion to Twentieth-century Opera. 1. publ. New York: Dodd, Mead, 1984.

MLA (9th ed.) Citation

Martin, George Whitney. The Companion to Twentieth-century Opera. 1. publ. Dodd, Mead, 1984.