DOUNGWILAI, D. The developments of Thai learning achievements on the royal language unit of Mattayomsuksa 2 students (8 Grades) by using the project-based learning. New Trends and Issues Proceedings on Humanities and Social Sciences, [S. l.], v. 4, n. 1, p. 169–174, 2017. DOI: 10.18844/prosoc.v4i1.2251. Disponível em: https://un-pub.eu/ojs/index.php/pntsbs/article/view/2251. Acesso em: 4 may. 2024.