To cite package ‘powertools’ in publications use:

Crespi C, Liu Z (2026). powertools: Power and Sample Size Tools. R package version 1.0.0, https://github.com/powerandsamplesize/powertools.

Corresponding BibTeX entry:

  @Manual{,
    title = {powertools: Power and Sample Size Tools},
    author = {Catherine M. Crespi and Zichen Liu},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/powerandsamplesize/powertools},
  }