Dyfyniad APA

Gribbin, J. R. (1988). The one per cent advantage: The sociobiology of being human. Blackwell.

Dyfyniad Arddull Chicago

Gribbin, John R. The One Per Cent Advantage: The Sociobiology of Being Human. Oxford: Blackwell, 1988.

Dyfyniad MLA

Gribbin, John R. The One Per Cent Advantage: The Sociobiology of Being Human. Blackwell, 1988.

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