@book{han-nom-d8-ntbt-py47,
  title = {Hoàng Việt lịch đại chính yếu 皇越歷代政要},
  year = {1845},
  url = {https://www.viet-dien.com/t/han-nom-d8-ntbt-py47/1},
  pages = {1},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-05},
}