To cite package ‘cliapp’ in publications use:

  Csárdi G (2024). _cliapp: Create Rich Command Line Applications_. R
  package version 0.1.2.9000, <https://github.com/r-lib/cliapp>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cliapp: Create Rich Command Line Applications},
    author = {Gábor Csárdi},
    year = {2024},
    note = {R package version 0.1.2.9000},
    url = {https://github.com/r-lib/cliapp},
  }