Dyfyniad APA

William Ruddiman. (2008). Earth's Climate: Past and Future. W.H.Freeman.

Dyfyniad Arddull Chicago

William Ruddiman. Earth's Climate: Past and Future. W.H.Freeman, 2008.

Dyfyniad MLA

William Ruddiman. Earth's Climate: Past and Future. W.H.Freeman, 2008.

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