To cite package ‘ggflags’ in publications use:

  Auguie B, Goldie J, Thériault R (2024). _ggflags: Plot flags of the
  world in ggplot2_. R package version 0.0.4,
  <https://github.com/jimjam-slam/ggflags>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ggflags: Plot flags of the world in ggplot2},
    author = {Baptiste Auguie and James Goldie and Rémi Thériault},
    year = {2024},
    note = {R package version 0.0.4},
    url = {https://github.com/jimjam-slam/ggflags},
  }