@book{han-nom-d8-90sj-7m85,
  title = {Dịch kinh 易經},
  url = {https://www.viet-dien.com/t/han-nom-d8-90sj-7m85/13},
  pages = {13},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-11},
}