To cite package ‘bndesr’ in publications use:

  Laltuf I (2023). “BNDESR: the package to access data from the
  Brazilian Development Bank.” <https://github.com/igorlaltuf/bndesr>.

A BibTeX entry for LaTeX users is

  @Misc{,
    title = {BNDESR: the package to access data from the Brazilian Development Bank.},
    author = {Igor Laltuf},
    year = {2023},
    url = {https://github.com/igorlaltuf/bndesr},
  }