Não informado. (1978). Industry and Environment. United Nations Environment Programme.
Lua i Stíl Chicago (17ú heag.)Não informado. Industry and Environment. Paris: United Nations Environment Programme, 1978.
Lua MLA (8ú heag.)Não informado. Industry and Environment. United Nations Environment Programme, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.