To cite package ‘bdf3’ in publications use:

  Yadav S, Dash S (2025). _bdf3: Efficient Block Designs for 3-Level
  Factorial Experiments in Block Size 3_. R package version 0.1.1,
  <https://CRAN.R-project.org/package=bdf3>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {bdf3: Efficient Block Designs for 3-Level Factorial Experiments in
Block Size 3},
    author = {Sunil Kumar Yadav and Sukanta Dash},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=bdf3},
  }