To cite package ‘sprex’ in publications use:

Archer E (2025). sprex: Species Richness and Extrapolation. R package version 1.4.2, https://github.com/ericarcher/sprex.

Corresponding BibTeX entry:

  @Manual{,
    title = {sprex: Species Richness and Extrapolation},
    author = {Eric Archer},
    year = {2025},
    note = {R package version 1.4.2},
    url = {https://github.com/ericarcher/sprex},
  }