To cite package ‘josaplay’ in publications use:

  Park C (2024). _josaplay: Add Josa Based on Previous Letter in
  Korean_. R package version 0.2.1,
  <https://github.com/mrchypark/josaplay>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {josaplay: Add Josa Based on Previous Letter in Korean},
    author = {Chanyub Park},
    year = {2024},
    note = {R package version 0.2.1},
    url = {https://github.com/mrchypark/josaplay},
  }