@book{quocamtantu,
  title = {Quốc âm tân tự 國音新字},
  author = {Nguyễn Tử 阮子},
  url = {https://www.viet-dien.com/t/quocamtantu/2},
  pages = {2},
  urldate = {2026-09-05},
}