Davids, K., Bennett, S., & Newell, K. M. (2006). Movement system variability. Human Kinetics.
Cita Chicago (17th ed.)Davids, Keith, Simon Bennett, i Karl M. Newell. Movement System Variability. Champaign, Ill: Human Kinetics, 2006.
Cita MLA (9th ed.)Davids, Keith, et al. Movement System Variability. Human Kinetics, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.