To cite package ‘uaparserjs’ in publications use:

  Rudis B, Hunt G, Simon L, Langel T (2026). _uaparserjs: Parse
  'User-Agent' Strings_. R package version 0.4.0,
  <https://CRAN.R-project.org/package=uaparserjs>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {uaparserjs: Parse 'User-Agent' Strings},
    author = {Bob Rudis and Greg Hunt and Lindsey Simon and Tobie Langel},
    year = {2026},
    note = {R package version 0.4.0},
    url = {https://CRAN.R-project.org/package=uaparserjs},
  }