Não informado. (1970). Education for Development. University College Cardiff, Faculty of Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Education for Development. Cardiff, Inglaterra: University College Cardiff, Faculty of Education, 1970.
Lua MLA (8ú heag.)Não informado. Education for Development. University College Cardiff, Faculty of Education, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.