To cite package ‘geosphere’ in publications use:

Hijmans R (2026). geosphere: Spherical Trigonometry. R package version 1.6-7, https://github.com/rspatial/geosphere.

Corresponding BibTeX entry:

  @Manual{,
    title = {geosphere: Spherical Trigonometry},
    author = {Robert J. Hijmans},
    year = {2026},
    note = {R package version 1.6-7},
    url = {https://github.com/rspatial/geosphere},
  }