Nix, J. R. (1994). Early advent singing. Review and Herald.
Lua i Stíl Chicago (17ú heag.)Nix, James R. Early Advent Singing. Hagerstown: Review and Herald, 1994.
Lua MLA (9ú heag.)Nix, James R. Early Advent Singing. Review and Herald, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.