To cite package ‘TwoStepCLogit’ in publications use:

  Craiu RV, Duchesne T, Fortin D, Baillargeon S (2025). _TwoStepCLogit:
  Conditional Logistic Regression: A Two-Step Estimation Method_. R
  package version 1.2.6,
  <https://CRAN.R-project.org/package=TwoStepCLogit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {TwoStepCLogit: Conditional Logistic Regression: A Two-Step Estimation Method},
    author = {Radu V. Craiu and Thierry Duchesne and Daniel Fortin and Sophie Baillargeon},
    year = {2025},
    note = {R package version 1.2.6},
    url = {https://CRAN.R-project.org/package=TwoStepCLogit},
  }