To cite package ‘docopt’ in publications use:

de Jonge E (2025). docopt: Command-Line Interface Specification Language. R package version 0.7.2, https://github.com/docopt/docopt.r.

Corresponding BibTeX entry:

  @Manual{,
    title = {docopt: Command-Line Interface Specification Language},
    author = {Edwin {de Jonge}},
    year = {2025},
    note = {R package version 0.7.2},
    url = {https://github.com/docopt/docopt.r},
  }