To cite package 'aws.signature' in publications use:

  Thomas J. Leeper (2020). aws.signature: Amazon Web Services Request
  Signatures. R package version 0.6.2.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {aws.signature: Amazon Web Services Request Signatures},
    author = {Thomas J. Leeper and Jonathan Stott and Gonzalo Diaz},
    year = {2020},
    note = {R package version 0.6.2},
  }