To cite package ‘GTFSwizard’ in publications use:

  Quesado Filho N, Guimarães C (2024). _GTFSwizard: Exploring and
  Manipulating 'GTFS' Files_. R package version 1.0.1,
  <https://github.com/opatp/gtfswizard>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {GTFSwizard: Exploring and Manipulating 'GTFS' Files},
    author = {Nelson de O. {Quesado Filho} and Caio G. C. Guimarães},
    year = {2024},
    note = {R package version 1.0.1},
    url = {https://github.com/opatp/gtfswizard},
  }