To cite package ‘circplot’ in publications use:

  Broman K (2026). _circplot: Circular Plots_. R package version 0.1-4,
  <https://github.com/kbroman/circplot>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {circplot: Circular Plots},
    author = {Karl W Broman},
    year = {2026},
    note = {R package version 0.1-4},
    url = {https://github.com/kbroman/circplot},
  }