LI, E. jing ., LAM, M.H. sum, LOUIE, L. and LI, S.S. sum 2012. An Analysis on History and Cultural Background of Chinese Tai Chi Soft Ball: 太極柔力球運動的歷史文化分析. Asian Journal of Physical Education & Recreation. 18, 1 (Jun. 2012), 27–30. DOI:https://doi.org/10.24112/ajper.181856.