To cite package ‘XML’ in publications use:

  Temple Lang D (2026). _XML: Tools for Parsing and Generating XML
  Within R and S-Plus_. R package version 3.99-0.25,
  <https://codeberg.org/aitap/xml>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {XML: Tools for Parsing and Generating XML Within R and S-Plus},
    author = {Duncan {Temple Lang}},
    year = {2026},
    note = {R package version 3.99-0.25},
    url = {https://codeberg.org/aitap/xml},
  }