To cite package ‘gamutil’ in publications use:

  Saito M (2026). _gamutil: Utilities to Facilitate Modeling Routines
  with Generalized Additive Models_. R package version 0.8.1,
  <https://CRAN.R-project.org/package=gamutil>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gamutil: Utilities to Facilitate Modeling Routines with Generalized
Additive Models},
    author = {Motoki Saito},
    year = {2026},
    note = {R package version 0.8.1},
    url = {https://CRAN.R-project.org/package=gamutil},
  }