@book{han-nom-d8-jad8-ry45,
  title = {Ngũ Vân Lâu tăng đính tứ thể thư pháp 五雲樓增訂四體書法},
  year = {1879},
  publisher = {Trường Phát Đường tân thuyên = 長發堂新镌: Hà Nội = 河内},
  url = {https://www.viet-dien.com/t/han-nom-d8-jad8-ry45},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-05},
}