Ilham, Imron, Putri Cicilia Kristina, and Siti Ayu Risma Putri. “The Effect of Squat Depth Jump Exercises on Heading in Putra Buana Club Players”. PPSDP International Journal of Education 3, no. 2 (September 30, 2024): 408–420. Accessed August 25, 2026. https://www.ejournal.ppsdp.org/index.php/pijed/article/view/350.