Iyakrus, I., and A. Ramadhan. “Analysis of Physical Fitness of South Sumatran Sepak Takraw Athletes”. Prosiding Seminar Nasional Pendidikan Jasmani Dan Kesehatan, Vol. 1, no. 1, Dec. 2021, pp. 349-55, http://ejournal.fkip.unsri.ac.id/index.php/semnaspenjas/article/view/223.