To cite package ‘rollout’ in publications use:

  Cero I, Brown C (2026). _rollout: Tools for Designing, Simulating,
  and Analyzing Implementation Rollout Trials_. R package version
  0.1.0, <https://github.com/iancero/rollout>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rollout: Tools for Designing, Simulating, and Analyzing Implementation
Rollout Trials},
    author = {Ian Cero and C. Hendricks Brown},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/iancero/rollout},
  }