Dyfyniad APA

SimpsonGeorge Gaylord. (1965). The meaning of evolution (4th ed.). Oxford.

Dyfyniad Arddull Chicago

SimpsonGeorge Gaylord. The Meaning of Evolution. 4th ed. Oxford, 1965.

Dyfyniad MLA

SimpsonGeorge Gaylord. The Meaning of Evolution. 4th ed. Oxford, 1965.

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