To cite package ‘earthcircle’ in publications use:

Sumner M (2023). earthcircle: Create Those Geographic Circles. R package version 0.0.1, https://github.com/hypertidy/earthcircle.

Corresponding BibTeX entry:

  @Manual{,
    title = {earthcircle: Create Those Geographic Circles},
    author = {Michael D. Sumner},
    year = {2023},
    note = {R package version 0.0.1},
    url = {https://github.com/hypertidy/earthcircle},
  }