Lippman. Hero of the Crossing. University of Nebraska Press.
Dyfyniad Arddull ChicagoLippman. Hero of the Crossing. University of Nebraska Press.
Dyfyniad MLALippman. Hero of the Crossing. University of Nebraska Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.