Dyfyniad APA
Cutnell, J. D., & Johnson, K. W. (1998). Physics (4th ed.). Wiley.
Dyfyniad Arddull Chicago
Cutnell, John D., and Kenneth W. Johnson. Physics. 4th ed. New York: Wiley, 1998.
Dyfyniad MLA
Cutnell, John D., and Kenneth W. Johnson. Physics. 4th ed. Wiley, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.