KHAN, S.; EM, S. Private tutoring and traditional classes: A comparison of students’ learning achievements in chemistry. Cambodian Journal of Educational Research, [S. l.], v. 2, n. 2, p. 63–79, 2025. DOI: 10.62037/cjer.2022.02.02.04. Disponível em: https://cjerjournal.com/index.php/cjer/article/view/99. Acesso em: 13 nov. 2026.