Grafton. The Birth of the Past. Johns Hopkins University Press.
Dyfyniad Arddull ChicagoGrafton. The Birth of the Past. Johns Hopkins University Press.
Dyfyniad MLAGrafton. The Birth of the Past. Johns Hopkins University Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.