To cite package ‘castgen’ in publications use:

  Sandercock A (2025). _castgen: Estimate Sample Size for Population
  Genomic Studies_. R package version 1.0.2,
  <https://github.com/alex-sandercock/castgen>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {castgen: Estimate Sample Size for Population Genomic Studies},
    author = {Alexander M. Sandercock},
    year = {2025},
    note = {R package version 1.0.2},
    url = {https://github.com/alex-sandercock/castgen},
  }