APA (7th ed.) Citation

Clarke, R. (1987). The ozone layer. United Nations Environment Programme.

Chicago Style (17th ed.) Citation

Clarke, Robin. The Ozone Layer. Nairobi: United Nations Environment Programme, 1987.

MLA (8th ed.) Citation

Clarke, Robin. The Ozone Layer. United Nations Environment Programme, 1987.

Warning: These citations may not always be 100% accurate.