To cite package ‘ggpmisc’ in publications use:

  Aphalo P (2024). _ggpmisc: Miscellaneous Extensions to 'ggplot2'_. R
  package version 0.6.0, <https://CRAN.R-project.org/package=ggpmisc>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ggpmisc: Miscellaneous Extensions to 'ggplot2'},
    author = {Pedro J. Aphalo},
    year = {2024},
    note = {R package version 0.6.0},
    url = {https://CRAN.R-project.org/package=ggpmisc},
  }