To cite package ‘factorplot’ in publications use:

  Armstrong D (2025). _factorplot: Presenting Pairwise Comparisons_. R
  package version 1.3, <https://CRAN.R-project.org/package=factorplot>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {factorplot: Presenting Pairwise Comparisons},
    author = {Dave Armstrong},
    year = {2025},
    note = {R package version 1.3},
    url = {https://CRAN.R-project.org/package=factorplot},
  }
