@book{han-nom-d8-tfy3-jq97,
  title = {Nam Sơn song khoá 南山窗課},
  author = {Ruan, Deda},
  url = {https://www.viet-dien.com/t/han-nom-d8-tfy3-jq97/6},
  pages = {6},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-10},
}