To cite package ‘polycor’ in publications use:

  Fox J (2025). _polycor: Polychoric and Polyserial Correlations_. R
  package version 0.8-2, <https://github.com/dmurdoch/polycor>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {polycor: Polychoric and Polyserial Correlations},
    author = {John Fox},
    year = {2025},
    note = {R package version 0.8-2},
    url = {https://github.com/dmurdoch/polycor},
  }