Hewitt, P. G. (1993). Conceptual physics (7th ed.). HarperCollinsCollegePub.
Dyfyniad Arddull ChicagoHewitt, Paul G. Conceptual Physics. 7th ed. New York: HarperCollinsCollegePub, 1993.
Dyfyniad MLAHewitt, Paul G. Conceptual Physics. 7th ed. HarperCollinsCollegePub, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.