To cite package ‘profileCI’ in publications use:

  Northrop PJ (2026). _profileCI: Profiling a Log-Likelihood to
  Calculate Confidence Intervals_. R package version 1.1.1,
  <https://github.com/paulnorthrop/profileci>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {profileCI: Profiling a Log-Likelihood to Calculate Confidence Intervals},
    author = {Paul J. Northrop},
    year = {2026},
    note = {R package version 1.1.1},
    url = {https://github.com/paulnorthrop/profileci},
  }