To cite package ‘stringfish’ in publications use:

  Ching T (2023). _stringfish: Alt String Implementation_. R package
  version 0.16.0, <https://github.com/traversc/stringfish>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {stringfish: Alt String Implementation},
    author = {Travers Ching},
    year = {2023},
    note = {R package version 0.16.0},
    url = {https://github.com/traversc/stringfish},
  }