To cite package ‘commonmark’ in publications use:

  Ooms J (2025). _commonmark: High Performance CommonMark and Github
  Markdown Rendering in R_. R package version 2.0.0,
  <https://github.com/r-lib/commonmark>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {commonmark: High Performance CommonMark and Github Markdown Rendering in R},
    author = {Jeroen Ooms},
    year = {2025},
    note = {R package version 2.0.0},
    url = {https://github.com/r-lib/commonmark},
  }