To cite package ‘ctypesio’ in publications use:

  Cheng M (2024). _ctypesio: Read and Write Standard 'C' Types from
  Files, Connections and Raw Vectors_. R package version 0.1.1.9000,
  <https://github.com/coolbutuseless/ctypesio>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ctypesio: Read and Write Standard 'C' Types from Files, Connections and
Raw Vectors},
    author = {Mike Cheng},
    year = {2024},
    note = {R package version 0.1.1.9000},
    url = {https://github.com/coolbutuseless/ctypesio},
  }