To cite package ‘ggiraphExtra’ in publications use:

Moon K (2020). ggiraphExtra: Make Interactive 'ggplot2'. Extension to 'ggplot2' and 'ggiraph'. R package version 0.3.0, https://github.com/cardiomoon/ggiraphextra.

Corresponding BibTeX entry:

  @Manual{,
    title = {ggiraphExtra: Make Interactive 'ggplot2'. Extension to
      'ggplot2' and 'ggiraph'},
    author = {Keon-Woong Moon},
    year = {2020},
    note = {R package version 0.3.0},
    url = {https://github.com/cardiomoon/ggiraphextra},
  }