To cite GTFSwizard in publications use:

Quesado Filho, N. O.; Guimaraes, C. G. C.; de Oliveira Neto, F. M. (2026). GTFSwizard: Creating, Exploring and Manipulating GTFS Files. R package version 1.2.1. https://CRAN.R-project.org/package=GTFSwizard.

Corresponding BibTeX entry:

  @Manual{quesado.guimaraes.oliveiraneto.2026,
    title = {GTFSwizard: Creating, Exploring and Manipulating GTFS
      Files},
    author = {N. O. {Quesado Filho} and C. G. C. Guimaraes and F. M.
      {de Oliveira Neto}},
    year = {2026},
    note = {R package version 1.2.1},
    url = {https://CRAN.R-project.org/package=GTFSwizard},
    doi = {10.32614/CRAN.package.GTFSwizard},
  }