Maharjito, Anang B., and Ika Handayani. “Athlete’s Heart (Jantung Atlet)”. Cermin Dunia Kedokteran 46, no. 12 (December 2, 2019): 732–737. Accessed December 23, 2024. https://cdkjournal.com/index.php/cdk/article/view/389.