Rizki RW, Banat A, Anggara D. Efforts In Improving Serve Learning Outcomes Using Exercises Variation On Volleyball Games At SD 228 Of North Bengkulu Regency. j.sport, j.olahraga [Internet]. 2022 Dec. 31 [cited 2024 May 1];2(2):71–76. Available from: https://penerbitadm.pubmedia.id/index.php/SSJ/article/view/1127