Não informado. (1950). Adult Education. American Association for Adult & Continuing Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Adult Education. Chapel Hill, NC: American Association for Adult & Continuing Education, 1950.
Lua MLA (8ú heag.)Não informado. Adult Education. American Association for Adult & Continuing Education, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.