Não informado. (1971). Documentation et information pedagogiques. Bureau International d' Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Documentation Et Information Pedagogiques. Geneve, Suíça: Bureau International d' Education, 1971.
Lua MLA (8ú heag.)Não informado. Documentation Et Information Pedagogiques. Bureau International d' Education, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.