SIN, T. H.; RUSLIN, B. I. Optimization of achievement motivation to improve long jump performance. COUNS-EDU: The International Journal of Counseling and Education, [S. l.], v. 3, n. 1, p. 34–40, 2018. DOI: 10.23916/0020180313810. Disponível em: https://counsedu.iicet.org/index.php/counsedu/article/view/138. Acesso em: 4 nov. 2025.