To cite package ‘photon’ in publications use:

Lieth J (2026). photon: High-Performance Geocoding using 'photon'. R package version 1.0.0, https://github.com/jslth/photon.

Corresponding BibTeX entry:

  @Manual{,
    title = {photon: High-Performance Geocoding using 'photon'},
    author = {Jonas Lieth},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/jslth/photon},
  }