Ramadhan, Rocky Alexander, Muh Isna Nurdin Wibisana, and Pandu Kresnapati. “Perbandingan Interval Training Dan Circuit Training Terhadap Peningkatan Daya Tahan Anaerobik SSB Putra Mororejo U-16”. Journal of Physical Activity and Sports (JPAS) 2, no. 3 (December 29, 2021): 303-309. Accessed October 31, 2025. https://mahardhika.or.id/jurnal/index.php/jpas/article/view/110.