Budden, J. (2008). Verdi (3rd ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Budden, Julian. Verdi. 3rd ed. New York: Oxford University Press, 2008.
Lua MLA (9ú heag.)Budden, Julian. Verdi. 3rd ed. Oxford University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.