Russetya RA, Ngatman, Astuti T. Relationship Between Concentration and Volleyball Passing Skills Students at State Junior High School 1 Patuk. Ind. Jo. Spo. Man. [Internet]. 2024 Aug. 24 [cited 2026 Jun. 13];5(3). Available from: https://www.ejournal.unma.ac.id/index.php/ijsm/article/view/15229