Cang NT, Tran Thao Linh N. Portfolio - Based in Writing Assessment: Students’ Perception and Its Impacts on Their Writing Performance . Int. j. soc. sci. humanit. invent. [Internet]. 2023 May 18 [cited 2024 May 30];10(05):7861-75. Available from: https://valleyinternational.net/index.php/theijsshi/article/view/4547