MAK, D. and NG IP, K.W.J. 1999. Intrinsic Motivation of University Students in Participating in Physical Fitness Training Programs: 大學生參加健身訓練課程的內發動機. Asian Journal of Physical Education & Recreation. 5, 2 (Dec. 1999), 31–34. DOI:https://doi.org/10.24112/ajper.51226.