Não informado. (1960). OECD Economic Surveys. Organization for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Não informado. OECD Economic Surveys. Paris: Organization for Economic Co-operation and Development, 1960.
Lua MLA (8ú heag.)Não informado. OECD Economic Surveys. Organization for Economic Co-operation and Development, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.