To cite package ‘alphavantager’ in publications use:

  Dancho M, Vaughan D (2024). _alphavantager: Lightweight Interface to
  the Alpha Vantage API_. R package version 0.1.3,
  <https://github.com/business-science/alphavantager>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {alphavantager: Lightweight Interface to the Alpha Vantage API},
    author = {Matt Dancho and Davis Vaughan},
    year = {2024},
    note = {R package version 0.1.3},
    url = {https://github.com/business-science/alphavantager},
  }