To cite package ‘cna’ in publications use:

  Ambuehl M, Baumgartner M (2024). _cna: Causal Modeling with
  Coincidence Analysis_. R package version 3.6.2,
  <https://CRAN.R-project.org/package=cna>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cna: Causal Modeling with Coincidence Analysis},
    author = {Mathias Ambuehl and Michael Baumgartner},
    year = {2024},
    note = {R package version 3.6.2},
    url = {https://CRAN.R-project.org/package=cna},
  }