Harrison, E. (2003). Masks of the universe: Changing ideas on the nature of the cosmos (2nd ed.). Cambridge University Press.
Dyfyniad Arddull ChicagoHarrison, Edward. Masks of the Universe: Changing Ideas on the Nature of the Cosmos. 2nd ed. Cambridge: Cambridge University Press, 2003.
Dyfyniad MLAHarrison, Edward. Masks of the Universe: Changing Ideas on the Nature of the Cosmos. 2nd ed. Cambridge University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.