To cite package ‘lmerPerm’ in publications use:

  Zeng W (2023). _lmerPerm: Perform Permutation Test on General Linear
  and Mixed Linear Regression_. R package version 0.1.9,
  <https://CRAN.R-project.org/package=lmerPerm>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {lmerPerm: Perform Permutation Test on General Linear and Mixed Linear
Regression},
    author = {Wentao Zeng},
    year = {2023},
    note = {R package version 0.1.9},
    url = {https://CRAN.R-project.org/package=lmerPerm},
  }