To cite package ‘MSG’ in publications use:

  Xie Y, Zhao P (2024). _MSG: Data and Functions for the Book Modern
  Statistical Graphics_. R package version 0.8.1,
  <https://github.com/yihui/msg>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MSG: Data and Functions for the Book Modern Statistical Graphics},
    author = {Yihui Xie and Peng Zhao},
    year = {2024},
    note = {R package version 0.8.1},
    url = {https://github.com/yihui/msg},
  }