To cite package ‘rgsrs’ in publications use:

  Zanettini C (2026). _rgsrs: Query the FDA Global Substance
  Registration System (GSRS) API_. R package version 0.1.0,
  <https://github.com/c1au6i0/rgsrs>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rgsrs: Query the FDA Global Substance Registration System (GSRS) API},
    author = {Claudio Zanettini},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/c1au6i0/rgsrs},
  }