Dyfyniad APA

(1981). The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press.

Dyfyniad Arddull Chicago

The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press, 1981.

Dyfyniad MLA

The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press, 1981.

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