To cite package ‘rnaturalearthdata’ in publications use:

  South A, Michael S, Massicotte P (2024). _rnaturalearthdata: World
  Vector Map Data from Natural Earth Used in 'rnaturalearth'_. R
  package version 1.0.0.9000, ,
  <https://github.com/ropensci/rnaturalearthdata>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rnaturalearthdata: World Vector Map Data from Natural Earth Used in 'rnaturalearth'},
    author = {Andy South and Schramm Michael and Philippe Massicotte},
    year = {2024},
    note = {R package version 1.0.0.9000, 
},
    url = {https://github.com/ropensci/rnaturalearthdata},
  }