To cite package ‘daff’ in publications use:

  Fitzpatrick P, de Jonge E, Warnes GR (2024). _daff: Diff, Patch and
  Merge for Data.frames_. R package version 1.1.1,
  <https://github.com/edwindj/daff>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {daff: Diff, Patch and Merge for Data.frames},
    author = {Paul Fitzpatrick and Edwin {de Jonge} and Gregory R. Warnes},
    year = {2024},
    note = {R package version 1.1.1},
    url = {https://github.com/edwindj/daff},
  }