วิเศษวงษา ท. The development of science process skill by problem base learning for Mathayom Suksa 5. Journal of Research and Development Institute Rajabhat Maha Sarakham University, [S. l.], v. 9, n. 2, p. 25–38, 2022. Disponível em: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/255687. Acesso em: 19 may. 2024.