To cite package ‘zipangu’ in publications use:

Uryu S (2026). zipangu: Japanese Utility Functions and Data. R package version 0.3.3.9000, https://github.com/uribo/zipangu.

Corresponding BibTeX entry:

  @Manual{,
    title = {zipangu: Japanese Utility Functions and Data},
    author = {Shinya Uryu},
    year = {2026},
    note = {R package version 0.3.3.9000},
    url = {https://github.com/uribo/zipangu},
  }