Widiyanto, E., I. A. Junaidi, and M. E. C. Lanos. “The Effect of Harness Training on Increasing 400 M Short Distance Running Speed of PASI Athletes”. PPSDP International Journal of Education, vol. 3, no. 2, Sept. 2024, pp. 679-90, doi:10.59175/pijed.v3i2.392.