To cite package ‘ggChinaFlag’ in publications use:

  Liu Z (2026). _ggChinaFlag: Drawing Chinese National and Historical
  Flags with 'ggplot2'_. R package version 0.2.0,
  <https://github.com/xlions/ggchinaflag>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ggChinaFlag: Drawing Chinese National and Historical Flags with 'ggplot2'},
    author = {Zhaoshuo Liu},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://github.com/xlions/ggchinaflag},
  }