To cite package ‘FPScausal’ in publications use:

  Fontana N, Ciardulli S (2026). _FPScausal: Functional Propensity
  Score for Causal Inference_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=FPScausal>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {FPScausal: Functional Propensity Score for Causal Inference},
    author = {Nicole Fontana and Simone Ciardulli},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=FPScausal},
  }