The Relationship Between Mental Toughness and Achievement Motivation of Sumedang Rugby Athletes. Journal Coaching Education Sports, [S. l.], v. 7, n. 2, p. 418–426, 2026. DOI: 10.31599/q83nbt83. Disponível em: https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/5764.. Acesso em: 2 aug. 2026.