“PENGARUH CORDS TRAINING TERHADAP KECEPATAN RENANG GAYA BEBAS 50 METER ATLET RENANG KU III PUTRA KLUB TIRTA PRIMA MEDAN”. JURNAL ILMU KEOLAHRAGAAN 24, no. 1 (July 28, 2025): 92–100. Accessed March 23, 2026. https://jurnal.unimed.ac.id/2012/index.php/JIK/article/view/68029.