To cite package ‘standartox’ in publications use:

  Scharmüller A (2022). _standartox: Ecotoxicological Information from
  the Standartox Database_. R package version 0.0.2,
  <https://CRAN.R-project.org/package=standartox>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {standartox: Ecotoxicological Information from the Standartox Database},
    author = {Andreas Scharmüller},
    year = {2022},
    note = {R package version 0.0.2},
    url = {https://CRAN.R-project.org/package=standartox},
  }