To cite package ‘cnefetools’ in publications use:

  Pedreira Junior J, Mioto B (2026). _cnefetools: Access and Analysis
  of Brazilian CNEFE Address Data_. R package version 0.3.0.9000,
  <https://github.com/pedreirajr/cnefetools>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cnefetools: Access and Analysis of Brazilian CNEFE Address Data},
    author = {Jorge Ubirajara {Pedreira Junior} and Bruno Mioto},
    year = {2026},
    note = {R package version 0.3.0.9000},
    url = {https://github.com/pedreirajr/cnefetools},
  }