To cite package ‘washex’ in publications use:

  Randles R (2021). _washex: Washington State Legislative Explorer_. R
  package version 1.2.0, <https://github.com/rwrandles/washex-r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {washex: Washington State Legislative Explorer},
    author = {Rohnin Randles},
    year = {2021},
    note = {R package version 1.2.0},
    url = {https://github.com/rwrandles/washex-r},
  }