To cite package ‘W3CMarkupValidator’ in publications use:

Hornik K (2026). W3CMarkupValidator: R Interface to W3C Markup Validation Services. R package version 0.2-3, https://CRAN.R-project.org/package=W3CMarkupValidator.

Corresponding BibTeX entry:

  @Manual{,
    title = {W3CMarkupValidator: R Interface to W3C Markup Validation
      Services},
    author = {Kurt Hornik},
    year = {2026},
    note = {R package version 0.2-3},
    url = {https://CRAN.R-project.org/package=W3CMarkupValidator},
  }