To cite package ‘marcxmlr’ in publications use:

  Isella L (2026). _marcxmlr: Efficient MARCXML Processing and Record
  Querying_. R package version 0.5.0,
  <https://CRAN.R-project.org/package=marcxmlr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {marcxmlr: Efficient MARCXML Processing and Record Querying},
    author = {Lorenzo Isella},
    year = {2026},
    note = {R package version 0.5.0},
    url = {https://CRAN.R-project.org/package=marcxmlr},
  }