To cite package ‘geohashTools’ in publications use:

  Chirico M (2024). _geohashTools: Tools for Working with Geohashes_. R
  package version 0.3.3,
  <https://github.com/michaelchirico/geohashtools>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {geohashTools: Tools for Working with Geohashes},
    author = {Michael Chirico},
    year = {2024},
    note = {R package version 0.3.3},
    url = {https://github.com/michaelchirico/geohashtools},
  }