To cite package ‘propensity’ in publications use:

  Barrett M (2026). _propensity: A Toolkit for Calculating and Working
  with Propensity Scores_. R package version 0.1.0.9000,
  <https://github.com/r-causal/propensity>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {propensity: A Toolkit for Calculating and Working with Propensity Scores},
    author = {Malcolm Barrett},
    year = {2026},
    note = {R package version 0.1.0.9000},
    url = {https://github.com/r-causal/propensity},
  }