To cite package ‘polr’ in publications use:

  Raymond B (2025). _polr: Polar OpenLayers_. R package version 0.1.1,
  <https://github.com/scar/polr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {polr: Polar OpenLayers},
    author = {Ben Raymond},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://github.com/scar/polr},
  }