Didik Purwanto, and Addriana Bulu Baan. “ MODEL PEMBELAJARAN SERVIS BAWAH BOLA VOLI UNTUK USIA SMP”. Tadulako Journal Sport Sciences And Physical Education 10, no. 1 (June 30, 2022): 18-27. Accessed August 2, 2025. https://jurnalfkipuntad.com/index.php/tjsspe/article/view/2180.