Gia Khanh, Bui. “GOVERNANCE IN NORTHWESTERN VIETNAM UNDER THE NGUYỄN DYNASTY (1802–1884): SEEN THROUGH THE THỔ QUAN (NATIVE OFFICIALS) – LƯU QUAN (IMPERIALLY APPOINTED OFFICIALS) POLICY”. HNUE Journal of Science: Journal of Social Sciences 71, no. 1 (January 27, 2026): 58–69. Accessed October 21, 2026. https://hnuejs.edu.vn/ss/article/view/1203.