LAI, S.L. and SU, J.C. 2003. The Influence on Tennis Serve Performance between the Groups of National Players and Non-national Players in terms of with/without Audiences and with/without Receivers: 有無觀衆在場與有無人接發球對國手與非國手發球表現的影響. Asian Journal of Physical Education & Recreation. 9, 1 (Jun. 2003), 44–49. DOI:https://doi.org/10.24112/ajper.91140.