To cite package ‘xbioclim’ in publications use:

  Robles Fernandez A (2026). _xbioclim: Bioclimatic Variables from
  Monthly Climate Data_. R package version 1.0.3,
  <https://alrobles.github.io/xbioclim/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {xbioclim: Bioclimatic Variables from Monthly Climate Data},
    author = {Angel Luis {Robles Fernandez}},
    year = {2026},
    note = {R package version 1.0.3},
    url = {https://alrobles.github.io/xbioclim/},
  }