APA (7th ed.) Zitazioa

Simon, H. W. (1955). Great operas. Pocket Books.

Chicago Style (17th ed.) Zitazioa

Simon, Henry W. Great Operas. Nueva York: Pocket Books, 1955.

MLA (9th ed.) Zitazioa

Simon, Henry W. Great Operas. Pocket Books, 1955.