To cite package ‘irr’ in publications use:

  Gamer M, Lemon J, Fellows I, Singh P (2026). _irr: Various
  Coefficients of Interrater Reliability and Agreement_. R package
  version 0.85, <https://CRAN.R-project.org/package=irr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {irr: Various Coefficients of Interrater Reliability and Agreement},
    author = {Matthias Gamer and Jim Lemon and Ian Fellows and Puspendra Singh},
    year = {2026},
    note = {R package version 0.85},
    url = {https://CRAN.R-project.org/package=irr},
  }