Dyfyniad APA

Houghton, J. (2009). Global warming: The complete briefing (4th.ed.). Cambridge University Press.

Dyfyniad Arddull Chicago

Houghton, John. Global Warming: The Complete Briefing. 4th.ed. Cambridge: Cambridge University Press, 2009.

Dyfyniad MLA

Houghton, John. Global Warming: The Complete Briefing. 4th.ed. Cambridge University Press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.