Warrack, J. H., & West, E. (1996). The concise Oxford dictionary of opera (3rd ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Warrack, John Hamilton, agus Ewan West. The Concise Oxford Dictionary of Opera. 3rd ed. Oxford: Oxford University Press, 1996.
Lua MLA (9ú heag.)Warrack, John Hamilton, agus Ewan West. The Concise Oxford Dictionary of Opera. 3rd ed. Oxford University Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.