@book{nu-tac-dien-am,
  title = {Nữ tắc diễn âm 女則演音},
  year = {1845},
  url = {https://www.viet-dien.com/t/nu-tac-dien-am/2},
  pages = {2},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-10},
}