Cita APA (7a ed.)

Clarke, H. (1993). The impact of climate change. United Nations Environment Programme.

Cita Chicago Style (17a ed.)

Clarke, Hazel. The Impact of Climate Change. Nairobi, Kenya: United Nations Environment Programme, 1993.

Cita MLA (9a ed.)

Clarke, Hazel. The Impact of Climate Change. United Nations Environment Programme, 1993.