@book{han-nom-d8-90sj-7m85,
  title = {Dịch kinh 易經},
  url = {https://viet-dien.com/t/han-nom-d8-90sj-7m85/40},
  pages = {40},
  note = {held by Columbia University Libraries},
  urldate = {2026-10-03},
}