To cite package ‘henna’ in publications use:

  Stoica A (2026). _henna: A Versatile Visualization Suite_. R package
  version 0.8.4, <https://github.com/andrei-stoica26/henna>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {henna: A Versatile Visualization Suite},
    author = {Andrei-Florian Stoica},
    year = {2026},
    note = {R package version 0.8.4},
    url = {https://github.com/andrei-stoica26/henna},
  }