Não informado. (1966). Research in Education. Educational Research Information Center.
Lua i Stíl Chicago (17ú heag.)Não informado. Research in Education. Washington: Educational Research Information Center, 1966.
Lua MLA (8ú heag.)Não informado. Research in Education. Educational Research Information Center, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.