Não informado. (1962). Cis information sheet. International Occupational Safety and Health Information Centre.
Lua i Stíl Chicago (17ú heag.)Não informado. Cis Information Sheet. Geneva, Suíça: International Occupational Safety and Health Information Centre, 1962.
Lua MLA (8ú heag.)Não informado. Cis Information Sheet. International Occupational Safety and Health Information Centre, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.