“Improving Squat Style Long Jump Techniques Through A Progressive Drill Training Model: A Classroom Action Research”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 18, no. 2 (May 10, 2026): 2796–2810. Accessed May 25, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/913.