Hernangómez D (2021). “cffr: Generate Citation File Format Metadata for R Packages.” Journal of Open Source Software, 6(67), 3900. doi:10.21105/joss.03900, https://doi.org/10.21105/joss.03900.

Consider also citing:

Druskat S, Spaaks JH, Chue Hong N, Haines R, Baker J, Bliven S, Willighagen E, Pérez-Suárez D, Konovalov A (2021). “Citation File Format.” doi:10.5281/zenodo.5171937, https://github.com/citation-file-format/citation-file-format.

Corresponding BibTeX entries:

  @Article{hernangomez2021,
    doi = {10.21105/joss.03900},
    url = {https://doi.org/10.21105/joss.03900},
    year = {2021},
    publisher = {The Open Journal},
    volume = {6},
    number = {67},
    pages = {3900},
    author = {Diego Hernangómez},
    title = {{cffr}: Generate Citation File Format Metadata for {R}
      Packages},
    journal = {Journal of Open Source Software},
  }

  @Misc{druskat_citation_2021,
    title = {Citation {File} {Format}},
    author = {Stephan Druskat and Jurriaan H. Spaaks and Neil {Chue
      Hong} and Robert Haines and James Baker and Spencer Bliven and
      Egon Willighagen and David Pérez-Suárez and Alexander Konovalov},
    year = {2021},
    month = {aug},
    doi = {10.5281/zenodo.5171937},
    url =
      {https://github.com/citation-file-format/citation-file-format},
    urldate = {2021-11-07},
    copyright = {CC-BY-4.0},
    date = {2021-08},
    abstract = {The Citation File Format lets you provide citation
      metadata for software or datasets in plaintext files that are
      easy to read by both humans and machines.},
  }