To cite package ‘stringx’ in publications use:

  Gagolewski M (2024). _stringx: Drop-in replacements for base R string
  functions powered by stringi_. R package version 0.2.8,
  <https://stringx.gagolewski.com/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {stringx: Drop-in replacements for base R string functions powered by stringi},
    author = {Marek Gagolewski},
    year = {2024},
    note = {R package version 0.2.8},
    url = {https://stringx.gagolewski.com/},
  }