To cite package ‘arkhaia’ in publications use:

  Collins-Elliott SA (2026). _arkhaia: Archaeological and Historical
  Analysis_. R package version 0.5,
  <https://github.com/scollinselliott/arkhaia>.

A BibTeX entry for LaTeX users is

  @Manual{collins-elliott_arkhaia_2026,
    title = {arkhaia: Archaeological and Historical Analysis},
    author = {Stephen A. Collins-Elliott},
    year = {2026},
    note = {R package version 0.5},
    url = {https://github.com/scollinselliott/arkhaia},
  }