To cite package ‘OpenBARD’ in publications use:

  Carpenter D (2025). _OpenBARD: Open British Arboricultural Record
  Dataset_. R package version 0.0.1,
  <https://codeberg.org/drdcarpenter/openbard>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {OpenBARD: Open British Arboricultural Record Dataset},
    author = {Dan Carpenter},
    year = {2025},
    note = {R package version 0.0.1},
    url = {https://codeberg.org/drdcarpenter/openbard},
  }