To cite package ‘feltr’ in publications use:

  Kenny C (2024). _feltr: Access the Felt API_. R package version
  0.1.0, , <https://github.com/christopherkenny/feltr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {feltr: Access the Felt API},
    author = {Christopher T. Kenny},
    year = {2024},
    note = {R package version 0.1.0, 
},
    url = {https://github.com/christopherkenny/feltr},
  }