To cite package ‘td’ in publications use:

  Eddelbuettel D (2022). _td: Access to the 'twelvedata' Financial Data
  API_. R package version 0.0.6.2, ,
  <https://github.com/eddelbuettel/td>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {td: Access to the 'twelvedata' Financial Data API},
    author = {Dirk Eddelbuettel},
    year = {2022},
    note = {R package version 0.0.6.2, 
},
    url = {https://github.com/eddelbuettel/td},
  }