9Deci, E. L. ,& Ryan, R. M. (1985). Intrinsic motivation and self-determination in human behaviour[M].New York: Plenum Press.
10Biddle, S. J. H., Soos, I.,& Chatzisarantis, N. L. (1999). Predicting physical activity intentions using goal perspectives and self-determination theory approaches[J]. European Psychologist, 4, 83-89.
