Não informado. (1947). Elementary English. National Council of Teachers of English.
Lua i Stíl Chicago (17ú heag.)Não informado. Elementary English. Champaign, Ill: National Council of Teachers of English, 1947.
Lua MLA (8ú heag.)Não informado. Elementary English. National Council of Teachers of English, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.