Rutter, J. (1988). Angels Carol. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Rutter, John. Angels Carol. Oxford: Oxford University Press, 1988.
Lua MLA (9ú heag.)Rutter, John. Angels Carol. Oxford University Press, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.