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 July 4, 2024. https://journals.ubmg.ac.id/index.php/JEaC/article/view/1114.