To cite package ‘geomapdata’ in publications use:

Lees J (2023). geomapdata: Data for Topographic and Geologic Mapping. R package version 2.0-2, https://CRAN.R-project.org/package=geomapdata.

Corresponding BibTeX entry:

  @Manual{,
    title = {geomapdata: Data for Topographic and Geologic Mapping},
    author = {Jonathan M. Lees},
    year = {2023},
    note = {R package version 2.0-2},
    url = {https://CRAN.R-project.org/package=geomapdata},
  }