Dyfyniad APA

Sorokhtin, O. (2007). Global warming and Global cooling: : evolution of climate on earth. Elsevier.

Dyfyniad Arddull Chicago

Sorokhtin, O.G. Global Warming and Global Cooling: : Evolution of Climate on Earth. Elsevier, 2007.

Dyfyniad MLA

Sorokhtin, O.G. Global Warming and Global Cooling: : Evolution of Climate on Earth. Elsevier, 2007.

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