To cite package ‘tmap.sources’ in publications use:

  Tennekes M (2026). _tmap.sources: Data Sources for 'tmap'_. R package
  version 0.1, <https://github.com/r-tmap/tmap.sources>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tmap.sources: Data Sources for 'tmap'},
    author = {Martijn Tennekes},
    year = {2026},
    note = {R package version 0.1},
    url = {https://github.com/r-tmap/tmap.sources},
  }