Trismayuni T, Perdima FE, Supriyanto S. Analysis Of Bottom Service Ability In Volley Ball Learning In Class Ix Students At Seluma 12 Negeri Junior High School. j.sport, j.olahraga [Internet]. 2021 Jun. 29 [cited 2025 May 4];1(1):15-7. Available from: https://penerbitadm.pubmedia.id/index.php/SSJ/article/view/70