SONTHICHAI, N.; SONTHICHAI, N.; KANJANASORN, W. The Motivation of Male Softball Players Khon Kaen Province Team . Journal of Education Khon Kaen University (Graduate Studies Research), [S. l.], v. 13, n. 2, p. 47–54, 2019. Disponível em: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/216823. Acesso em: 7 may. 2024.