GANI, Ruslan Abdul; TANGKUDUNG, James; DLIS, Firmansyah. Development Exercise Model In Butterfly Swimming For Athletesin The Age Group 11-13 Years Based on Drill Throught Android App. Journal of Education, Health and Sport, [S. l.], v. 9, n. 6, p. 376–387, 2019. Disponível em: https://apcz.umk.pl/JEHS/article/view/7109. Acesso em: 28 jun. 2025.