Bakar, S. A., N. R. Salim, A. F. Mohd Ayub, and K. Gopal. “Success Indicators of Mathematical Problem-Solving Performance Among Malaysian Matriculation Students”. International Journal of Learning, Teaching and Educational Research, vol. 20, no. 3, Mar. 2021, pp. 97-116, https://ijlter.myres.net/index.php/ijlter/article/view/136.