(1981). An Environmental bibliography: Publications issued by unep or under its auspices 1973-1980. United Nations Environment Programme.
Lua i Stíl Chicago (17ú heag.)An Environmental Bibliography: Publications Issued by Unep or Under Its Auspices 1973-1980. Nairobi: United Nations Environment Programme, 1981.
Lua MLA (9ú heag.)An Environmental Bibliography: Publications Issued by Unep or Under Its Auspices 1973-1980. United Nations Environment Programme, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.