To cite package ‘wstdiff’ in publications use:

  Yamaguchi Y (2025). _wstdiff: Welch-Satterthwaite Approximation for
  t-Distribution Differences_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=wstdiff>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {wstdiff: Welch-Satterthwaite Approximation for t-Distribution Differences},
    author = {Yusuke Yamaguchi},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=wstdiff},
  }