To cite package ‘rollupTree’ in publications use:

  Jenkins JS (2025). _rollupTree: Perform Recursive Computations_. R
  package version 0.1.0.9000, , <https://github.com/jsjuni/rolluptree>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rollupTree: Perform Recursive Computations},
    author = {James Steven Jenkins},
    year = {2025},
    note = {R package version 0.1.0.9000, 
},
    url = {https://github.com/jsjuni/rolluptree},
  }