To cite package ‘gaplightr’ in publications use:

  Frazer G, Albers S (2026). _gaplightr: Gap Light Analysis of Virtual
  and Real Fisheye Photography_. R package version 0.0.0.9000,
  <https://hakaiinstitute.github.io/gaplightr/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gaplightr: Gap Light Analysis of Virtual and Real Fisheye Photography},
    author = {Gord Frazer and Sam Albers},
    year = {2026},
    note = {R package version 0.0.0.9000},
    url = {https://hakaiinstitute.github.io/gaplightr/},
  }