บุญวัฒนะกุล ช. A Synthesis of Graduate Students Research in Non-formal and Informal Education, School of Educational Studies, Sukhothai Thammathirat Open University. STOU Education Journal, [S. l.], v. 10, n. 2, p. 152–163, 2018. Disponível em: https://so05.tci-thaijo.org/index.php/edjour_stou/article/view/128795. Acesso em: 13 oct. 2026.