Ilham, I., P. C. Kristina, and S. A. R. Putri. “The Effect of Squat Depth Jump Exercises on Heading in Putra Buana Club Players”. PPSDP International Journal of Education, vol. 3, no. 2, Sept. 2024, pp. 408-20, doi:10.59175/pijed.v3i2.350.