@book{han-nom-d8-4s7q-te91,
  title = {Hồng Vũ đại định địa lý cấm thư 洪武大定地理禁書},
  url = {https://www.viet-dien.com/t/han-nom-d8-4s7q-te91/4},
  pages = {4},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-06},
}