To cite package ‘CATAcode’ in publications use:

  Nickodem K, Merrin G (2025). _CATAcode: Explore and Code Responses to
  Check-All-that-Apply Survey Items_. R package version 1.0.0,
  <https://github.com/knickodem/catacode>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CATAcode: Explore and Code Responses to Check-All-that-Apply Survey Items},
    author = {Kyle Nickodem and Gabriel J. Merrin},
    year = {2025},
    note = {R package version 1.0.0},
    url = {https://github.com/knickodem/catacode},
  }