To cite package ‘Keng’ in publications use:

  Zhang Q (2024). _Keng: Keng's Axe and Firewood_. R package version
  2024.10.16, <https://CRAN.R-project.org/package=Keng>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Keng: Keng's Axe and Firewood},
    author = {Qingyao Zhang},
    year = {2024},
    note = {R package version 2024.10.16},
    url = {https://CRAN.R-project.org/package=Keng},
  }