Yen, Nguyen Thi. “Assessment of Experimental Results Application of the Physical Exercise System With Instruments for Kids Kindly 4-5 Years Old in Hanoi City, Vietnam”. International Journal of Humanities and Education Development (IJHED) 5, no. 3 (June 30, 2023): 118–130. Accessed April 3, 2025. https://theshillonga.com/index.php/jhed/article/view/52.