Hưng, Trần Duy, and Nguyễn Ngọc Cương. “Automatic Language Recognition of Written English”. Journal of Computer Science and Cybernetics 18, no. 3 (July 29, 2012): 268–272. Accessed November 21, 2024. https://vjs.ac.vn/index.php/jcc/article/view/1589.