To cite package ‘elastic’ in publications use:

  Chamberlain S (2025). _elastic: General Purpose Interface to
  'Elasticsearch'_. R package version 1.2.1.91,
  <https://github.com/ropensci/elastic>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {elastic: General Purpose Interface to 'Elasticsearch'},
    author = {Scott Chamberlain},
    year = {2025},
    note = {R package version 1.2.1.91},
    url = {https://github.com/ropensci/elastic},
  }