To cite package ‘ggtwotone’ in publications use:

  Sareena B, Hofmann H (2026). _ggtwotone: Dual-Tone and Contrast-Aware
  'ggplot2' Geoms_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=ggtwotone>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ggtwotone: Dual-Tone and Contrast-Aware 'ggplot2' Geoms},
    author = {Beenu Sareena and Heike Hofmann},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=ggtwotone},
  }