United Nations Environment Programme. (1991). Register of international treaties and other agreements in the field of the environment. UNEP.
Chicago Style (17th ed.) CitationUnited Nations Environment Programme. Register of International Treaties and Other Agreements in the Field of the Environment. Nairobi: UNEP, 1991.
MLA (8th ed.) CitationUnited Nations Environment Programme. Register of International Treaties and Other Agreements in the Field of the Environment. UNEP, 1991.
Warning: These citations may not always be 100% accurate.