Nugroho, Sigit. “Pengaruh Latihan Sirkuit Terhadap Kadar Hemoglobin Dan Daya Tahan Aerobik”. Jorpres (Jurnal Olahraga Prestasi) 17, no. 1 (January 29, 2021): 40–48. Accessed June 3, 2025. https://journal.uny.ac.id/index.php/jorpres/article/view/37343.