APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.