Interactive Duel Service Game Training to Improve Badminton Backhand Serve at SMPN Gollek School No 34 Selayar Islands. JPPM [Internet]. 2025 Sep. 30 [cited 2026 Apr. 16];1(3):57-65. Available from: https://journalpejuang.web.id/index.php/perjuanganpengabdian/article/view/34