To cite package ‘whapi’ in publications use:

  Leite A, Vaconcelos H, Bezerra D (2025). _whapi: R Client for
  'whapi.cloud'_. R package version 0.0.2,
  <https://github.com/strategicprojects/whapi>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {whapi: R Client for 'whapi.cloud'},
    author = {Andre Leite and Hugo Vaconcelos and Diogo Bezerra},
    year = {2025},
    note = {R package version 0.0.2},
    url = {https://github.com/strategicprojects/whapi},
  }