To cite sads in publications please use:

Prado P, Dantas Miranda M, Chalom A (????). sads: Maximum Likelihood Models for Species Abundance Distributions. https://CRAN.R-project.org/package=sads.

Corresponding BibTeX entry:

  @Manual{,
    title = {{sads}: Maximum Likelihood Models for Species Abundance
      Distributions},
    author = {Paulo In'acio Prado and Murilo {Dantas Miranda} and
      Andr'e Chalom},
    url = {https://CRAN.R-project.org/package=sads},
  }