Não informado. (1974). Social and labour bulletin. International Labour Office.
Lua i Stíl Chicago (17ú heag.)Não informado. Social and Labour Bulletin. Geneva, Suíça: International Labour Office, 1974.
Lua MLA (8ú heag.)Não informado. Social and Labour Bulletin. International Labour Office, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.