Não informado. (1978). Industry and Environment. United Nations Environment Programme.
Chicago-viite (17. p.)Não informado. Industry and Environment. Paris: United Nations Environment Programme, 1978.
MLA-viite (8. p.)Não informado. Industry and Environment. United Nations Environment Programme, 1978.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.