Adam, A. C., & Cullen, D. (2003). O Holy Night. Irish Tenors.
Lua i Stíl Chicago (17ú heag.)Adam, Adoiphe Charles, agus David Cullen. O Holy Night. Dublin: Irish Tenors, 2003.
Lua MLA (9ú heag.)Adam, Adoiphe Charles, agus David Cullen. O Holy Night. Irish Tenors, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.