Pratama Purba, Robert, Dian Pujianto, and Andika Prabowo. “Pengaruh Latihan Circuit Training Terhadap Daya Tahan Kardiovaskular Siswa Ekstrakurikuler Sepak Bola SMA Negeri 1 Kaur: The Effect of Circuit Training on Cardiovascular Endurance of Football Extracurricular Students at SMA Negeri 1 Kaur”. SPORT GYMNASTICS : Jurnal Ilmiah Pendidikan Jasmani 3, no. 2 (December 1, 2022): 156–169. Accessed June 5, 2025. https://ejournal.unib.ac.id/gymnastics/article/view/24320.