Não informado. (1955). International Review of Education. Unesco, Institute for Education.
Lua i Stíl Chicago (17ú heag.)Não informado. International Review of Education. Hamburg, Alemanha: Unesco, Institute for Education, 1955.
Lua MLA (8ú heag.)Não informado. International Review of Education. Unesco, Institute for Education, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.