To cite package ‘kableExtra’ in publications use:

  Zhu H (2024). _kableExtra: Construct Complex Table with 'kable' and
  Pipe Syntax_. R package version 1.3.4.9000, ,
  <https://github.com/haozhu233/kableextra>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {kableExtra: Construct Complex Table with 'kable' and Pipe Syntax},
    author = {Hao Zhu},
    year = {2024},
    note = {R package version 1.3.4.9000, 
},
    url = {https://github.com/haozhu233/kableextra},
  }