WANNAPHO, nopparada; LAOSUWAN, T. The Development of Problem-Based Learning Activities on Buddhist Principles for Grade 8 Students. Journal of Education Rajabhat Maha Sarakham University, Maha Sarakham, Thailand, v. 23, n. 2, p. 298–309, 2026. Disponível em: https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/289535. Acesso em: 16 sep. 2026.