Vawas, Nabil, Mujriah Mujriah, and Nurdin Nurdin. “Pengaruh Latihan Variasi Umpan Terhadap Kemampuan Heading Sepak Takraw Pada Peserta Ekstrakurikuler”. Sportify Journal 3, no. 2 (December 30, 2023): 222–232. Accessed July 29, 2026. https://journal-center.litpam.com/index.php/sfj/article/view/5067.