To cite package ‘WRestimates’ in publications use:

  O'Donnell A (2023). _WRestimates: Sample Size, Power and CI for the
  Win Ratio_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=WRestimates>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {WRestimates: Sample Size, Power and CI for the Win Ratio},
    author = {Autumn O'Donnell},
    year = {2023},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=WRestimates},
  }