APA (7th ed.) Citation

Knight, R. A. (1938). Opera cavalcade: The story of the Metropolitan. Metropolitan Opera Guild.

Chicago Style (17th ed.) Citation

Knight, Ruth Adams. Opera Cavalcade: The Story of the Metropolitan. New York: Metropolitan Opera Guild, 1938.

MLA (9th ed.) Citation

Knight, Ruth Adams. Opera Cavalcade: The Story of the Metropolitan. Metropolitan Opera Guild, 1938.

Warning: These citations may not always be 100% accurate.