Sari, L. P., A. A. P. Karo Karo, and A. K. Z. Rida. “Effectiveness of High Intensity Interval Training (HIIT) in Improving Athlete Performance: A Literature Review”. Jurnal Pendidikan Jasmani (JPJ), Vol. 5, no. 1, July 2024, pp. 89-99, doi:10.55081/jpj.v5i1.2688.