To cite package ‘percentiles’ in publications use:

  Amin Marquardt D (2026). _percentiles: Calculate (Stratified)
  Percentiles_. R package version 0.3.0,
  <https://CRAN.R-project.org/package=percentiles>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {percentiles: Calculate (Stratified) Percentiles},
    author = {Dr Peter {Amin Marquardt}},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://CRAN.R-project.org/package=percentiles},
  }