Ngan Ha, Nguyen. “AN ACTION RESEARCH ON IMPROVING EFL STUDENTS’ ESSAY WRITING SKILLS BY USING THE PROCESS APPROACH”. VNU Journal of Foreign Studies 37, no. 5 (October 31, 2021): 45–65. Accessed February 24, 2026. https://jfs.ulis.vnu.edu.vn/index.php/fs/article/view/4911.