TOH, Kian Lam. “Important Developments of Leisure Education in American Public Schools: What Can We Learn From Them? 美國學校的休間敎育: 他山之石”. Asian Journal of Physical Education & Recreation 5, no. 1 (June 1, 1999): 43–48. Accessed July 23, 2024. https://ejournals.lib.hkbu.edu.hk/index.php/ajper/article/view/1221.