To cite package ‘sidrar’ in publications use:

  Prado Siqueira R (2026). _sidrar: An Interface to IBGE's SIDRA API_.
  R package version 0.3.0, <https://CRAN.R-project.org/package=sidrar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sidrar: An Interface to IBGE's SIDRA API},
    author = {Renato {Prado Siqueira}},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://CRAN.R-project.org/package=sidrar},
  }