To cite package ‘ggeo’ in publications use:

  Burkhard P (2025). _ggeo: Themes and Helpers for ggplot2_. R package
  version 1.0.0, <https://github.com/nenuial/ggeo>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ggeo: Themes and Helpers for ggplot2},
    author = {Pascal Burkhard},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://github.com/nenuial/ggeo},
  }