Frederick, A., & Frederick, C. (2006). Stretch to win. Human Kinetics.
Dyfyniad Arddull ChicagoFrederick, Ann, and Chris Frederick. Stretch to Win. Champaign, Ill: Human Kinetics, 2006.
Dyfyniad MLAFrederick, Ann, and Chris Frederick. Stretch to Win. Human Kinetics, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.