To cite package ‘frheritage’ in publications use:

  Chevereau M (2026). _frheritage: R Interface to Get French Heritage
  Data_. R package version 0.1.1,
  <https://github.com/mucau/frheritage>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {frheritage: R Interface to Get French Heritage Data},
    author = {Matthieu Chevereau},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://github.com/mucau/frheritage},
  }