PITRA JUMLI, Ahmad; ZARYCHTA ROMANOWSKA, Kamila. Impact of Positive Coaching Strategies on Self-Efficacy and Competitive Performance in School-Aged Athletes. Qubahan Journal of Coaching and Sports Sciences, [S. l.], v. 3, n. 4, p. 1–17, 2025. DOI: 10.48161/qcsj.v4n2a57. Disponível em: https://csqubahan.com/csqubahan/index.php/QJCS/article/view/57. Acesso em: 25 may. 2026.