APA (7th ed.) Citation

Costa, M., Bechi, G., Caniglia, M., Gobbi, T., Schipa, T., Gigli, B., . . . Poli, N. (1950). Mad about the opera. Bel Canto Society.

Chicago Style (17th ed.) Citation

Costa, Mario, et al. Mad About the Opera. [Place of publication not identified]: Bel Canto Society, 1950.

MLA (9th ed.) Citation

Costa, Mario, et al. Mad About the Opera. Bel Canto Society, 1950.