Dyfyniad APA

Webby, B. D. (2004). The great Ordovician biodiversification event. Columbia University Press.

Dyfyniad Arddull Chicago

Webby, B. D. The Great Ordovician Biodiversification Event. New York ; Chichester, England: Columbia University Press, 2004.

Dyfyniad MLA

Webby, B. D. The Great Ordovician Biodiversification Event. Columbia University Press, 2004.

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