To cite package ‘fgc’ in publications use:

  Morris W (2024). _fgc: FinBIF geographic data conversion_. R package
  version 0.3.18.9000, <https://github.com/luomus/finbif-geo-convert>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fgc: FinBIF geographic data conversion},
    author = {William K. Morris},
    year = {2024},
    note = {R package version 0.3.18.9000},
    url = {https://github.com/luomus/finbif-geo-convert},
  }