Siregar, Samsuddin, and Eva Faridah. “Pengaruh Metode Resiprokal Dan Motor Ability Dalam Meningkatkan Keterampilan Servis Bola Voli”. Indonesian Journal of Physical Education and Sport Science 1, no. 2 (November 9, 2021): 19-23. Accessed December 20, 2024. https://update.journaldev.latihan.my.id/index.php/ijpess/article/view/201.