NGỌC HẢINGUYỄN. “Innorate the Grading Scale of the Multiple Choice Questiones Exam in the National High School Graduation Examination”. Tạp chí Nghiên cứu Khoa học Công đoàn, no. 13 (January 6, 2020): 28. Accessed March 29, 2026. https://vjol.info.vn/DHCD/article/view/44909.