“Effectiveness of Modification Aids in High Jump Learning”. Jurnal Pendidikan Kepelatihan Olahraga: PEJUANG 2, no. 1 (February 28, 2026): 75–85. Accessed September 13, 2026. https://journalpejuang.web.id/index.php/jurnalpkopejuang/article/view/72.