Houghton, J. T. (2009). Global warming: The complete briefing (Fourth edition.). Cambridge University Press.
Chicago Style (17th ed.) ZitazioaHoughton, J. T. Global Warming: The Complete Briefing. Fourth edition. New York: Cambridge University Press, 2009.
MLA (9th ed.) ZitazioaHoughton, J. T. Global Warming: The Complete Briefing. Fourth edition. Cambridge University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.