To cite package ‘countries’ in publications use:

  Bellelli F (2026). _countries: Deal with Country Data in an Easy
  Way_. R package version 1.2.5,
  <https://github.com/fbellelli/countries>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {countries: Deal with Country Data in an Easy Way},
    author = {Francesco Saverio Bellelli},
    year = {2026},
    note = {R package version 1.2.5},
    url = {https://github.com/fbellelli/countries},
  }
