Diamond, A. (1959). History and Origin of Language. Methuen.
Dyfyniad Arddull ChicagoDiamond, A.S. History and Origin of Language. London: Methuen, 1959.
Dyfyniad MLADiamond, A.S. History and Origin of Language. Methuen, 1959.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.