To cite package ‘ggpp’ in publications use:

Aphalo P (2024). ggpp: Grammar Extensions to 'ggplot2'. R package version 0.5.8-1.9000, , https://github.com/aphalo/ggpp.

Corresponding BibTeX entry:

  @Manual{,
    title = {ggpp: Grammar Extensions to 'ggplot2'},
    author = {Pedro J. Aphalo},
    year = {2024},
    note = {R package version 0.5.8-1.9000, },
    url = {https://github.com/aphalo/ggpp},
  }