To cite package ‘KSIC’ in publications use:

  Yun J (2025). _KSIC: Korea Standard Industrial Classification
  (KSIC)_. R package version 1.0.2, <https://github.com/urbanjj/ksic>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {KSIC: Korea Standard Industrial Classification (KSIC)},
    author = {Jongjin Yun},
    year = {2025},
    note = {R package version 1.0.2},
    url = {https://github.com/urbanjj/ksic},
  }