Herly, Herlizon, Ramadi Ramadi, Aref Vai, and Aulia Gusdernawati. “Pengaruh Latihan Twisted Bicycle Crunch Terhadap Daya Tahan Otot Perut Atlet Sepak Bola”. Sepakbola 2, no. 1 (September 7, 2022): 35–39. Accessed August 11, 2025. https://www.ejournal.ressi.id/index.php/sepakbola/article/view/174.