United Nations Environment Programme. (2001). Protecting the ozone layer. UNEP.
Chicago Style (17th ed.) CitationUnited Nations Environment Programme. Protecting the Ozone Layer. Nairopi, Kenya: UNEP, 2001.
MLA (9th ed.) CitationUnited Nations Environment Programme. Protecting the Ozone Layer. UNEP, 2001.
Warning: These citations may not always be 100% accurate.