To cite package ‘PredTest’ in publications use:

  Vargas R, Montgomery N (2024). _PredTest: Preparing Data For, and
  Calculating the Prediction Test_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=PredTest>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {PredTest: Preparing Data For, and Calculating the Prediction Test},
    author = {Richard Vargas and Neal Montgomery},
    year = {2024},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=PredTest},
  }