Dyfyniad APA

Appleman, P. (1979). Darwin. New York: W. W. Norton and Company.

Dyfyniad Arddull Chicago

Appleman, Phillip. Darwin. New York: W. W. Norton and Company, 1979.

Dyfyniad MLA

Appleman, Phillip. Darwin. New York: W. W. Norton and Company, 1979.

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