United Nations Environmental Program. (1986). State of the environment: The state of the world environment. UNEP.
Chicago Style (17th ed.) CitationUnited Nations Environmental Program. State of the Environment: The State of the World Environment. Nairobi, Kenya: UNEP, 1986.
MLA (9th ed.) CitationUnited Nations Environmental Program. State of the Environment: The State of the World Environment. UNEP, 1986.
Warning: These citations may not always be 100% accurate.