To cite package ‘shadowtext’ in publications use:

Yu G (2025). shadowtext: Shadow Text Grob and Layer. R package version 0.1.6, https://github.com/guangchuangyu/shadowtext.

Corresponding BibTeX entry:

  @Manual{,
    title = {shadowtext: Shadow Text Grob and Layer},
    author = {Guangchuang Yu},
    year = {2025},
    note = {R package version 0.1.6},
    url = {https://github.com/guangchuangyu/shadowtext},
  }