Dyfyniad APA

Redfern, M. (2006). The Earth: A very short introduction. Oxford University Press.

Dyfyniad Arddull Chicago

Redfern, Martin. The Earth: A Very Short Introduction. New Delhi: Oxford University Press, 2006.

Dyfyniad MLA

Redfern, Martin. The Earth: A Very Short Introduction. Oxford University Press, 2006.

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