To cite package ‘gpkg’ in publications use:

  Brown A (2025). _gpkg: Utilities for the Open Geospatial Consortium
  'GeoPackage' Format_. R package version 0.0.12, ,
  <https://github.com/brownag/gpkg>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gpkg: Utilities for the Open Geospatial Consortium 'GeoPackage' Format},
    author = {Andrew Brown},
    year = {2025},
    note = {R package version 0.0.12, },
    url = {https://github.com/brownag/gpkg},
  }