Não informado. (1964). American education. Office of Education.
Lua i Stíl Chicago (17ú heag.)Não informado. American Education. Washington: Office of Education, 1964.
Lua MLA (8ú heag.)Não informado. American Education. Office of Education, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.