To cite package ‘ibd’ in publications use:

  Mandal B (2024). _ibd: Incomplete Block Designs_. R package version
  1.6, <https://CRAN.R-project.org/package=ibd>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ibd: Incomplete Block Designs},
    author = {B N Mandal},
    year = {2024},
    note = {R package version 1.6},
    url = {https://CRAN.R-project.org/package=ibd},
  }