To cite package ‘vf’ in publications use:

  Kenny C (2024). _vf: Read Voter Files_. R package version 0.0.0.9000,
  , <https://github.com/christopherkenny/vf>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {vf: Read Voter Files},
    author = {Christopher T. Kenny},
    year = {2024},
    note = {R package version 0.0.0.9000, 
},
    url = {https://github.com/christopherkenny/vf},
  }