Não informado. (1969). Development and Change. Institute of Social Studies.
Lua i Stíl Chicago (17ú heag.)Não informado. Development and Change. Oxford, Inglaterra: Institute of Social Studies, 1969.
Lua MLA (8ú heag.)Não informado. Development and Change. Institute of Social Studies, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.