@book{han-nom-d8-kvta-0189,
  title = {Gia truyền chẩn đậu yếu quyết 家傳診痘要夬},
  url = {https://www.viet-dien.com/t/han-nom-d8-kvta-0189/4},
  pages = {4},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-06},
}