To cite package ‘powerprior’ in publications use:

  Yamaguchi Y, Huang Y (2025). _powerprior: Conjugate Power Priors for
  Bayesian Analysis of Normal Data_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=powerprior>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {powerprior: Conjugate Power Priors for Bayesian Analysis of Normal Data},
    author = {Yusuke Yamaguchi and Yifei Huang},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=powerprior},
  }