nurhasanah, rani. “The Relationship Between Concentration Levels and Strike Outcomes of Woodball Athletes in West Sumatra: CONCENTRATION LEVELS”. Jurnal IKEOR 2, no. 5 (November 12, 2024). Accessed November 21, 2024. https://ikeor.ppj.unp.ac.id/index.php/ikeor/article/view/422.