To cite package ‘foreign’ in publications use:

  R Core Team (2025). _foreign: Read Data Stored by 'Minitab', 'S',
  'SAS', 'SPSS', 'Stata', 'Systat', 'Weka', 'dBase', ..._. R package
  version 0.8-88, <https://CRAN.R-project.org/package=foreign>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {foreign: Read Data Stored by 'Minitab', 'S', 'SAS', 'SPSS', 'Stata',
'Systat', 'Weka', 'dBase', ...},
    author = {{R Core Team}},
    year = {2025},
    note = {R package version 0.8-88},
    url = {https://CRAN.R-project.org/package=foreign},
  }