To cite package ‘janitor’ in publications use:

  Firke S (2024). _janitor: Simple Tools for Examining and Cleaning
  Dirty Data_. R package version 2.2.1,
  <https://CRAN.R-project.org/package=janitor>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {janitor: Simple Tools for Examining and Cleaning Dirty Data},
    author = {Sam Firke},
    year = {2024},
    note = {R package version 2.2.1},
    url = {https://CRAN.R-project.org/package=janitor},
  }