MAHAMOD, Zamri. The Effectiveness of Problem Based Learning on Achievement and Students Higher Order Thinking Skills in Malay Language Essay Writing. International Journal of Psychosocial Rehabilitation, [S. l.], v. 24, n. 6, p. 5397–5411, 2020. DOI: 10.61841/nx7pwf88. Disponível em: https://www.psychosocial.com/index.php/ijpr/article/view/7028. Acesso em: 21 jul. 2025.