To cite package ‘komaletter’ in publications use:

  Nuske R, Eddelbuettel D, Wolen A (2026). _komaletter: Simply
  Beautiful PDF Letters from Markdown_. R package version 0.5.1,
  <https://CRAN.R-project.org/package=komaletter>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {komaletter: Simply Beautiful PDF Letters from Markdown},
    author = {Robert Nuske and Dirk Eddelbuettel and Aaron Wolen},
    year = {2026},
    note = {R package version 0.5.1},
    url = {https://CRAN.R-project.org/package=komaletter},
  }