To cite package ‘childpen’ in publications use:

  Leventer, D. (2025). Identification of Child Penalties.
  arXiv:2602.07486. https://arxiv.org/abs/2602.07486

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Identification of Child Penalties},
    author = {Dor Leventer},
    year = {2025},
    journal = {arXiv preprint},
    doi = {10.48550/arXiv.2602.07486},
    url = {https://arxiv.org/abs/2602.07486},
  }