To cite package ‘gtfstools’ in publications use:

Herszenhut D, Pereira R, Andrade P, Bazzo J (2026). gtfstools: General Transit Feed Specification (GTFS) Editing and Analysing Tools. R package version 2.0.0, https://CRAN.R-project.org/package=gtfstools.

Corresponding BibTeX entry:

  @Manual{,
    title = {gtfstools: General Transit Feed Specification (GTFS)
      Editing and Analysing Tools},
    author = {Daniel Herszenhut and Rafael H. M. Pereira and Pedro R.
      Andrade and Joao Bazzo},
    year = {2026},
    note = {R package version 2.0.0},
    url = {https://CRAN.R-project.org/package=gtfstools},
  }