To cite package ‘opencage’ in publications use:

Possenriede D, Sadler J, Salmon M (2026). opencage: Geocode with the OpenCage API. R package version 0.3.0, https://CRAN.R-project.org/package=opencage.

Corresponding BibTeX entry:

  @Manual{,
    title = {opencage: Geocode with the OpenCage API},
    author = {Daniel Possenriede and Jesse Sadler and Maëlle Salmon},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://CRAN.R-project.org/package=opencage},
  }