To cite package ‘metro’ in publications use:

Nicholls K (2024). metro: Washington Metropolitan Area Transit Authority API. R package version 0.9.3, https://github.com/k5cents/metro.

Corresponding BibTeX entry:

  @Manual{,
    title = {metro: Washington Metropolitan Area Transit Authority
      API},
    author = {Kiernan Nicholls},
    year = {2024},
    note = {R package version 0.9.3},
    url = {https://github.com/k5cents/metro},
  }