To cite package ‘googlePolylines’ in publications use:

  Cooley D (2025). _googlePolylines: Encoding Coordinates into 'Google'
  Polylines_. R package version 0.8.7,
  <https://github.com/symbolixau/googlepolylines>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {googlePolylines: Encoding Coordinates into 'Google' Polylines},
    author = {David Cooley},
    year = {2025},
    note = {R package version 0.8.7},
    url = {https://github.com/symbolixau/googlepolylines},
  }