To cite package ‘nptest’ in publications use:

Helwig NE (2026). nptest: Nonparametric Bootstrap and Permutation Tests. R package version 1.2, https://CRAN.R-project.org/package=nptest.

Corresponding BibTeX entry:

  @Manual{,
    title = {nptest: Nonparametric Bootstrap and Permutation Tests},
    author = {Nathaniel E. Helwig},
    year = {2026},
    note = {R package version 1.2},
    url = {https://CRAN.R-project.org/package=nptest},
  }