To cite package ‘circles’ in publications use:

  ODea R (2025). _circles: A Small Package for Drawing Various
  Combinations of Circles_. R package version 0.1.0,
  <https://github.com/ryan-odea/circles>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {circles: A Small Package for Drawing Various Combinations of Circles},
    author = {Ryan ODea},
    year = {2025},
    note = {R package version 0.1.0},
    url = {https://github.com/ryan-odea/circles},
  }