MAHAMOD, Zamri; MOKTER, Farah Adlina. 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/t6qv7319. Disponível em: https://www.psychosocial.com/index.php/ijpr/article/view/7025. Acesso em: 19 dec. 2025.