F. BOIK, B.; SELAN, yoniel. PENGARUH LATIHAN LARI BOLAK BALIK 20 METER TERHADAP KECEPATAN RENANG GAYA BEBAS . Jurnal Sport & Science 45, [S. l.], v. 7, n. 1, p. 482–489, 2025. Disponível em: https://ejournal.upg45ntt.ac.id/jss/article/view/487. Acesso em: 7 sep. 2026.