(1960). Evolution after Darwin. The University of Chicago.
Dyfyniad Arddull ChicagoEvolution After Darwin. Chicago: The University of Chicago, 1960.
Dyfyniad MLAEvolution After Darwin. The University of Chicago, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.