To cite `ThemePark` in publications use:

Jané M, Pilling L, Kenny C (2023). ThemePark: Themes for ggplot2 from Popular Culture. R package, https://github.com/MatthewBJane/ThemePark.

Corresponding BibTeX entry:

  @Manual{ThemePark,
    title = {{ThemePark}: Themes for ggplot2 from Popular Culture},
    author = {Matthew B. Jané and Luke C. Pilling and Christopher T.
      Kenny},
    year = {2023},
    note = {R package},
    url = {https://github.com/MatthewBJane/ThemePark},
  }