To cite package ‘VARtests’ in publications use:

  Belfrage M (2025). _VARtests: Bootstrap Tests for Cointegration and
  Autocorrelation in VARs_. R package version 2.0.7,
  <https://CRAN.R-project.org/package=VARtests>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {VARtests: Bootstrap Tests for Cointegration and Autocorrelation in VARs},
    author = {Markus Belfrage},
    year = {2025},
    note = {R package version 2.0.7},
    url = {https://CRAN.R-project.org/package=VARtests},
  }