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Ramadhan S, Putranto D, Oktarina O. The Effect of Drill Training Method on Badminton Backhand Hit Skills at PB Club. Sarma Pangkalpinang. JoPEI [Internet]. 2024 Jun. 30 [cited 2026 Sep. 1];1(1):6-10. Available from: https://jurnal.stokbinaguna.ac.id/index.php/JoPEI/article/view/2645