To cite package ‘voi’ in publications use:

  Jackson C, Heath A (2024). _voi: Expected Value of Information_. R
  package version 1.0.3, <https://github.com/chjackson/voi>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {voi: Expected Value of Information},
    author = {Christopher Jackson and Anna Heath},
    year = {2024},
    note = {R package version 1.0.3},
    url = {https://github.com/chjackson/voi},
  }