Nguyen, Thanh Tung. “DETERMINING THE ORIGINS OF THE AN NAM CHÍ NGUYÊN”. Thang Long Journal of Science: Van hien and Heritage 1, no. 2 (February 22, 2023): 45-59. Accessed April 29, 2024. https://science.thanglong.edu.vn/index.php/volb/article/view/31.