[1]. Houghton. John.«Global Warming», Third Edition, Cambridge University Press.
[2]. E. A. Mathez (2009).«Climate Change»: The Science of Global Warming and Our Energy Future, Columbia University Press.
[3].IPCC. Climate Change (2007). «The Physical Science Basis», Cambridge University Press 2007
[4]. IPCC. Climate Change (2007).« Mitigation of Climate Change», Cambridge University Press .