To cite package ‘CTPPr’ in publications use:

  Fucci A, Cates A, Simas M (2025). _CTPPr: Census Transportation
  Planning Products Program (CTPP) API_. R package version 1.0.0,
  <https://github.com/westat-transportation/ctppr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CTPPr: Census Transportation Planning Products Program (CTPP) API},
    author = {Anthony Fucci and Alex Cates and Marcelo Simas},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://github.com/westat-transportation/ctppr},
  }