To cite package ‘ftExtra’ in publications use:

Yasumoto A (2025). ftExtra: Extensions for 'Flextable'. R package version 0.6.4.9999, https://github.com/atusy/ftextra.

Corresponding BibTeX entry:

  @Manual{,
    title = {ftExtra: Extensions for 'Flextable'},
    author = {Atsushi Yasumoto},
    year = {2025},
    note = {R package version 0.6.4.9999},
    url = {https://github.com/atusy/ftextra},
  }