To cite package ‘unexcel’ in publications use:

  Freitas H (2025). _unexcel: Revert Excel Serial Dates Back to
  Intended Day.Month Numerics_. R package version 0.1.0,
  <https://github.com/drhrf/unexcel>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {unexcel: Revert Excel Serial Dates Back to Intended Day.Month Numerics},
    author = {Hercules Freitas},
    year = {2025},
    note = {R package version 0.1.0},
    url = {https://github.com/drhrf/unexcel},
  }