To cite package ‘powerHE’ in publications use:

  Wu S, Thibault D (2025). _powerHE: Power and Sample Size Calculations
  with Hierarchical Endpoints_. R package version 1.0.1,
  <https://CRAN.R-project.org/package=powerHE>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {powerHE: Power and Sample Size Calculations with Hierarchical Endpoints},
    author = {Sarah Wu and Dylan Thibault},
    year = {2025},
    note = {R package version 1.0.1},
    url = {https://CRAN.R-project.org/package=powerHE},
  }