To cite package ‘apor’ in publications use:

  Espinosa-Brito J (2025). _apor: Assessment of Predictions for an
  Ordinal Response_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=apor>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {apor: Assessment of Predictions for an Ordinal Response},
    author = {Javier Espinosa-Brito},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=apor},
  }