World resources 1990-1991 a report by the world resources institute in collaboration with The United Nations environment programme and The United Nations development programme. Oxford University Press.
Chicago Style (17th ed.) CitationWorld Resources 1990-1991 a Report by the World Resources Institute in Collaboration with The United Nations Environment Programme and The United Nations Development Programme. Oxford University Press.
MLA (8th ed.) CitationWorld Resources 1990-1991 a Report by the World Resources Institute in Collaboration with The United Nations Environment Programme and The United Nations Development Programme. Oxford University Press.
Warning: These citations may not always be 100% accurate.