THE RELATIONSHIP OF MENTAL TOUGHNESS TO COMPETITIVE ANXIETY IN SMAN 4 WEST SUMATRA ATHLETES (SPORTS SPECIALIZATION). In Trend : International Journal of Trends in Global Psychological Science and Education, [S. l.], v. 1, n. 3, p. 1–10, 2024. DOI: 10.62260/intrend.v1i3.147. Disponível em: https://jurnal.causalita.com/index.php/intrend/article/view/147.. Acesso em: 23 jun. 2026.