TUYẾT, Trần Thị. The Causes of Passiveness in Learning of Vietnamese Students. VNU Journal of Science: Education Research, [S.l.], v. 29, n. 2, june 2013. ISSN 2588-1159. Available at: <https://js.vnu.edu.vn/ER/article/view/502>. Date accessed: 23 dec. 2024.