To cite package ‘refineR’ in publications use:

  Ammer T, Rank C, Schuetzenmeister A (2024). _refineR: Reference
  Interval Estimation using Real-World Data_. R package version 1.6.2,
  <https://CRAN.R-project.org/package=refineR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {refineR: Reference Interval Estimation using Real-World Data},
    author = {Tatjana Ammer and Christopher M Rank and Andre Schuetzenmeister},
    year = {2024},
    note = {R package version 1.6.2},
    url = {https://CRAN.R-project.org/package=refineR},
  }