To cite package ‘tigris’ in publications use:

  Walker K (2024). _tigris: Load Census TIGER/Line Shapefiles_. R
  package version 2.1.2, <https://github.com/walkerke/tigris>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tigris: Load Census TIGER/Line Shapefiles},
    author = {Kyle Walker},
    year = {2024},
    note = {R package version 2.1.2},
    url = {https://github.com/walkerke/tigris},
  }