To cite package ‘GNRS’ in publications use:

Boyle B, Maitner B (2021). GNRS: Access the 'Geographic Name Resolution Service'. R package version 0.3.4, https://CRAN.R-project.org/package=GNRS.

Corresponding BibTeX entry:

  @Manual{,
    title = {GNRS: Access the 'Geographic Name Resolution Service'},
    author = {Brad Boyle and Brian Maitner},
    year = {2021},
    note = {R package version 0.3.4},
    url = {https://CRAN.R-project.org/package=GNRS},
  }