Siregar, A., P. Mardesia, D. Sari, and N. Denay. “The Effect of Interval Training on the 1500-Meter Freestyle Swimming Ability of UNP Swimming Specialization Students”. Jurnal Patriot, Vol. 7, no. 4, Dec. 2025, pp. 151-6, doi:10.24036/patriot.v7i4.1204.