To cite package ‘fastpolicytree’ in publications use:

  Cussens J (2026). _fastpolicytree: Constructs Policy Trees from
  Covariate and Reward Data_. R package version 1.0,
  <https://github.com/jcussens/tailoring>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fastpolicytree: Constructs Policy Trees from Covariate and Reward Data},
    author = {James Cussens},
    year = {2026},
    note = {R package version 1.0},
    url = {https://github.com/jcussens/tailoring},
  }