To cite package ‘systemfonts’ in publications use:

  Pedersen T, Ooms J, Govett D (2024). _systemfonts: System Native Font
  Finding_. R package version 1.1.0.9000, ,
  <https://github.com/r-lib/systemfonts>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {systemfonts: System Native Font Finding},
    author = {Thomas Lin Pedersen and Jeroen Ooms and Devon Govett},
    year = {2024},
    note = {R package version 1.1.0.9000, 
},
    url = {https://github.com/r-lib/systemfonts},
  }