Budden, J. (2008). Verdi (3rd ed.). Oxford University Press.
Chicago Style (17th ed.) ZitazioaBudden, Julian. Verdi. 3rd ed. New York: Oxford University Press, 2008.
MLA (9th ed.) ZitazioaBudden, Julian. Verdi. 3rd ed. Oxford University Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.