To cite package ‘ndgras’ in publications use:

  Doe J (2026). _ndgras: What the Package Does (Title Case)_. R package
  version 0.1.0, <https://github.com/uchidamizuki/ndgras>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ndgras: What the Package Does (Title Case)},
    author = {Jane Doe},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/uchidamizuki/ndgras},
  }