To cite package ‘marronniers’ in publications use:

  Les Créavores (2026). _marronniers: Calendrier éditorial français
  (marronniers) 2026-2027_. R package version 0.1.0,
  <https://github.com/tresor4k/marronniers-r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {marronniers: Calendrier éditorial français (marronniers) 2026-2027},
    author = {{Les Créavores}},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/tresor4k/marronniers-r},
  }