To cite package ‘et.nwfva’ in publications use:

  Nuske R, Staupendahl K, Albert M (2024). _et.nwfva: Forest Yield
  Tables for Northwest Germany and their Application_. R package
  version 0.1.1.900, <https://github.com/rnuske/et.nwfva>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {et.nwfva: Forest Yield Tables for Northwest Germany and their Application},
    author = {Robert Nuske and Kai Staupendahl and Matthias Albert},
    year = {2024},
    note = {R package version 0.1.1.900},
    url = {https://github.com/rnuske/et.nwfva},
  }