@book{han-nom-d8-5b3a-x441,
  title = {An Nam sơ học sử 安南初學史},
  url = {https://viet-dien.com/t/han-nom-d8-5b3a-x441/20},
  pages = {20},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-11},
}