Analysis of the Level of Upper Service Skills in Volleyball Games of Junior High School Extracurricular Students. Jurnal Pendidikan Kepelatihan Olahraga: PEJUANG, [S. l.], v. 2, n. 1, p. 86–92, 2026. Disponível em: https://journalpejuang.web.id/index.php/jurnalpkopejuang/article/view/81. Acesso em: 17 apr. 2026.