Seman, Norhaizian, Aliza X Alias, and Zanaton Ikhsan. “Pedagogical Content Knowledge on Early Mathematics Among Malaysia’s Preschool Teachers: A Literature Review”. International Journal of Psychosocial Rehabilitation 24, no. 6 (August 31, 2020): 5308–5317. Accessed December 18, 2025. https://psychosocial.com/index.php/ijpr/article/view/7010.