To cite package ‘fathom’ in publications use:

  psychometrician (2026). _fathom: Look Before You Parse_. R package
  version 0.0.1, <https://github.com/psychometrician/fathom>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fathom: Look Before You Parse},
    author = {{psychometrician}},
    year = {2026},
    note = {R package version 0.0.1},
    url = {https://github.com/psychometrician/fathom},
  }