To cite package ‘duckspending’ in publications use:

  Grant Witness (2026). _duckspending: Access to USAspending Data in a
  DuckLake_. R package version 0.1.0,
  <https://usaspending.grant-witness.us/r-package/duckspending>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {duckspending: Access to USAspending Data in a DuckLake},
    author = {{Grant Witness}},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://usaspending.grant-witness.us/r-package/duckspending},
  }