To cite package ‘formr’ in publications use:

  Arslan R, Seidel T (2026). _formr: Companion R Package for the
  'formr' Survey Framework_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=formr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {formr: Companion R Package for the 'formr' Survey Framework},
    author = {Ruben Arslan and Tim B Seidel},
    year = {2026},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=formr},
  }