To cite the 'BIFIEsurvey' package in publications use:

  BIFIE, Robitzsch, A., & Oberwimmer, K. (2024). BIFIEsurvey: Tools for
  survey statistics in educational assessment. R package version 3.7-1.
  https://CRAN.R-project.org/package=BIFIEsurvey

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {BIFIEsurvey: Tools for survey statistics in educational assessment},
    author = {{BIFIE} and Alexander Robitzsch and Konrad Oberwimmer},
    year = {2024},
    note = {R package version 3.7-1},
    url = {https://CRAN.R-project.org/package=BIFIEsurvey},
  }