Não informado. (1971). Educational documentation and information. International Bureau of Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Educational Documentation and Information. Geneve, Suíça: International Bureau of Education, 1971.
Lua MLA (8ú heag.)Não informado. Educational Documentation and Information. International Bureau of Education, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.