To cite package ‘tmaptools’ in publications use:

  Tennekes M (2025). _tmaptools: Thematic Map Tools_. R package version
  3.2, , <https://github.com/r-tmap/tmaptools>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tmaptools: Thematic Map Tools},
    author = {Martijn Tennekes},
    year = {2025},
    note = {R package version 3.2, 
},
    url = {https://github.com/r-tmap/tmaptools},
  }