To cite package ‘kfold’ in publications use:

  Kong D (2026). _kfold: Machine Learning for Runoff Prediction_. R
  package version 0.1.1, <https://github.com/rpkgs/kfold>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {kfold: Machine Learning for Runoff Prediction},
    author = {Dongdong Kong},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://github.com/rpkgs/kfold},
  }