Não informado. (1971). Environmental health and safety news. University of Washington, Environmental Research Laboratory.
Lua i Stíl Chicago (17ú heag.)Não informado. Environmental Health and Safety News. Seattle, Wash: University of Washington, Environmental Research Laboratory, 1971.
Lua MLA (8ú heag.)Não informado. Environmental Health and Safety News. University of Washington, Environmental Research Laboratory, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.