Houghton, J. (1997). Global warming: :complete briefing. University Press.
Chicago Edition CitationHoughton, John. Global Warming: :complete Briefing. Cambridge: University Press, 1997.
Cita MLAHoughton, John. Global Warming: :complete Briefing. University Press, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.