To cite package ‘vartest’ in publications use:

  Cosar G, Yilmaz M, Kasikci M, Dag O (2026). _vartest: Tests for
  Variance Homogeneity_. R package version 1.7,
  <https://CRAN.R-project.org/package=vartest>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {vartest: Tests for Variance Homogeneity},
    author = {Gozde Cosar and Muhammed Ali Yilmaz and Merve Kasikci and Osman Dag},
    year = {2026},
    note = {R package version 1.7},
    url = {https://CRAN.R-project.org/package=vartest},
  }