To cite package ‘ILSAstats’ in publications use:

  Christiansen A (2026). _ILSAstats: Statistics for International
  Large-Scale Assessments (ILSA)_. R package version 0.4.5,
  <https://github.com/dopatendo/ilsastats>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ILSAstats: Statistics for International Large-Scale Assessments (ILSA)},
    author = {Andrés Christiansen},
    year = {2026},
    note = {R package version 0.4.5},
    url = {https://github.com/dopatendo/ilsastats},
  }