Ichwan, Arif. “Practice With Distributed Practice Method and Massed Practice Against Underserve Ability in Volleyball Game”. Prosiding Seminar Nasional Pendidikan Jasmani dan Kesehatan 1, no. 1 (December 3, 2021): 165-170. Accessed November 21, 2024. http://ejournal.fkip.unsri.ac.id/index.php/semnaspenjas/article/view/198.