Vũ Thị Kiều, Trang. “The Ability of Using Language of 5-6 Years Old Children in the Preparation of Enrolling Grade 1 at Primary Schools”. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY 4, no. 8 (April 7, 2021): 120–124. Accessed May 4, 2024. https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/193.