To cite package ‘NPP’ in publications use:

Han Z, Zhang Q, Bai T, Duan Y, Ye K (2025). NPP: Normalized Power Prior Bayesian Analysis. R package version 0.7.0, https://CRAN.R-project.org/package=NPP.

Corresponding BibTeX entry:

  @Manual{,
    title = {NPP: Normalized Power Prior Bayesian Analysis},
    author = {Zifei Han and Qiang Zhang and Tianyu Bai and Yuyan Duan
      and Keying Ye},
    year = {2025},
    note = {R package version 0.7.0},
    url = {https://CRAN.R-project.org/package=NPP},
  }