To cite package ‘bellreg’ in publications use:

  Demarqui F (2024). _bellreg: Count Regression Models Based on the
  Bell Distribution_. R package version 0.0.2.2,
  <https://CRAN.R-project.org/package=bellreg>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {bellreg: Count Regression Models Based on the Bell Distribution},
    author = {Fabio Demarqui},
    year = {2024},
    note = {R package version 0.0.2.2},
    url = {https://CRAN.R-project.org/package=bellreg},
  }