To cite package ‘xml2’ in publications use:

  Wickham H, Hester J, Ooms J (2024). _xml2: Parse XML_. R package
  version 1.3.6, , <https://github.com/r-lib/xml2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {xml2: Parse XML},
    author = {Hadley Wickham and Jim Hester and Jeroen Ooms},
    year = {2024},
    note = {R package version 1.3.6, },
    url = {https://github.com/r-lib/xml2},
  }