United Nations Environment Programme. (1985). Register of international treaties and other agreements in the field of the environment. United Nations Environment Programme.
Chicago Style (17th ed.) CitationUnited Nations Environment Programme. Register of International Treaties and Other Agreements in the Field of the Environment. Nairobi: United Nations Environment Programme, 1985.
MLA引文United Nations Environment Programme. Register of International Treaties and Other Agreements in the Field of the Environment. United Nations Environment Programme, 1985.
警告：這些引文格式不一定是100％准確.