To cite package ‘tf’ in publications use:

  Scheipl F, Goldsmith J (2024). _tf: S3 Classes and Methods for Tidy
  Functional Data_. R package version 0.3.4, ,
  <https://github.com/tidyfun/tf>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tf: S3 Classes and Methods for Tidy Functional Data},
    author = {Fabian Scheipl and Jeff Goldsmith},
    year = {2024},
    note = {R package version 0.3.4, },
    url = {https://github.com/tidyfun/tf},
  }