To cite package ‘tidyfinance’ in publications use:

  Scheuch, Voigt, and Weiss (2023). Tidy Finance with R (1st ed.).
  Chapman and Hall/CRC. https://doi.org/10.1201/b23237.

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Tidy Finance with R},
    author = {Christoph Scheuch and Stefan Voigt and Patrick Weiss},
    year = {2023},
    publisher = {Chapman and Hall/CRC},
    edition = {1st},
    url = {https://www.tidy-finance.org/r/index.html},
    doi = {10.1201/b23237},
  }