To cite package ‘KEGGREST’ in publications use:

  Tenenbaum D, Maintainer B (2024). _KEGGREST: Client-side REST access
  to the Kyoto Encyclopedia of Genes and Genomes (KEGG)_. R package
  version 1.45.1, <https://bioconductor.org/packages/KEGGREST>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {KEGGREST: Client-side REST access to the Kyoto Encyclopedia of Genes and
Genomes (KEGG)},
    author = {Dan Tenenbaum and Bioconductor Package Maintainer},
    year = {2024},
    note = {R package version 1.45.1},
    url = {https://bioconductor.org/packages/KEGGREST},
  }