Phan, Trong Nam, and Thi Ngoc Trang Tran. “Professional Competency Development for Preschool Teachers in Di An City, Binh Duong Province”. Dong Thap University Journal of Science 14, no. 07S (December 5, 2025): 196–211. Accessed July 11, 2026. https://dthujs.vn/index.php/dthujs/article/view/3033.