Não informado. (1974). International Journal of Occupational Health and Safety. Medical Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. International Journal of Occupational Health and Safety. Northbrook, Ill: Medical Publications, 1974.
Lua MLA (8ú heag.)Não informado. International Journal of Occupational Health and Safety. Medical Publications, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.