@book{han-nom-d8-j0p3-ef04,
  title = {Chính tâm chân kinh. Q.01 正心真經},
  url = {https://www.viet-dien.com/t/han-nom-d8-j0p3-ef04/3},
  pages = {3},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-05},
}