To cite package ‘pplot’ in publications use:

  Pfister R, Frings C (2025). _pplot: Chronological and Ordered p-Plots
  for Empirical Data_. R package version 0.9,
  <https://CRAN.R-project.org/package=pplot>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pplot: Chronological and Ordered p-Plots for Empirical Data},
    author = {Roland Pfister and Christian Frings},
    year = {2025},
    note = {R package version 0.9},
    url = {https://CRAN.R-project.org/package=pplot},
  }