ZENG, H. Z., R. W. LEUNG, and W. LIU. “An Examination of Competitive Anxiety and Self-Confidence Among College Varsity Athletes: 大學代表隊選手之競賽焦慮與自信的檢驗研究”. Asian Journal of Physical Education &Amp; Recreation, vol. 14, no. 2, Dec. 2008, pp. 6-12, doi:10.24112/ajper.141719.