Polkinghorne, J. The god of hope and the end of the world. London.
Dyfyniad Arddull ChicagoPolkinghorne, John. The God of Hope and the End of the World. New Haven: London.
Dyfyniad MLAPolkinghorne, John. The God of Hope and the End of the World. London.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.