Dyfyniad APA

Walker, J. (2014). Principles of Physics (10th ed.). Wiley.

Dyfyniad Arddull Chicago

Walker, Jearl. Principles of Physics. 10th ed. New Delhi: Wiley, 2014.

Dyfyniad MLA

Walker, Jearl. Principles of Physics. 10th ed. Wiley, 2014.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.