Matiti, Alun, and MashudiImam. “DEVELOPMENTAL PRINCIPLES DEVELOPMENTAL PRINCIPLES: DEVELOPMENTAL PRINCIPLES”. Journal of Education and Culture (JEaC) 1, no. 1 (October 17, 2021): 1-7. Accessed January 9, 2025. https://journals.ubmg.ac.id/index.php/JEaC/article/view/1114.