To cite package ‘appkitr’ in publications use:

  Haag M, de Alwis C, Kohne J (2026). _appkitr: Utilities to Work with
  'GESIS AppKit' Data_. R package version 2.0.0.5,
  <https://CRAN.R-project.org/package=appkitr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {appkitr: Utilities to Work with 'GESIS AppKit' Data},
    author = {Maximilian Haag and Charlotte {de Alwis} and Julian Kohne},
    year = {2026},
    note = {R package version 2.0.0.5},
    url = {https://CRAN.R-project.org/package=appkitr},
  }