APA (7th ed.) Zitazioa

Verdi, G. (2004). Verdi's a masked ball. Opera Journeys Publishing.

Chicago Style (17th ed.) Zitazioa

Verdi, Giuseppe. Verdi's a Masked Ball. Coral Gables, FL: Opera Journeys Publishing, 2004.

MLA (9th ed.) Zitazioa

Verdi, Giuseppe. Verdi's a Masked Ball. Opera Journeys Publishing, 2004.