To cite package ‘sass’ in publications use:

  Cheng J, Mastny T, Iannone R, Schloerke B, Sievert C (2024). _sass:
  Syntactically Awesome Style Sheets ('Sass')_. R package version
  0.4.9.9000, , <https://github.com/rstudio/sass>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sass: Syntactically Awesome Style Sheets ('Sass')},
    author = {Joe Cheng and Timothy Mastny and Richard Iannone and Barret Schloerke and Carson Sievert},
    year = {2024},
    note = {R package version 0.4.9.9000, },
    url = {https://github.com/rstudio/sass},
  }