Dyfyniad APA
Schneider, S. H. (1989). Global warming: Are we entering the greenhouse century? Sierra Club Books.
Dyfyniad Arddull Chicago
Schneider, Stephen Henry. Global Warming: Are We Entering the Greenhouse Century? San Francisco,: Sierra Club Books, 1989.
Dyfyniad MLA
Schneider, Stephen Henry. Global Warming: Are We Entering the Greenhouse Century? Sierra Club Books, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.