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.
Precaución: Estas citas no son 100% exactas.