To cite package ‘ssdsims’ in publications use:

  Thorley J, Fisher R (2026). _ssdsims: What the Package Does (One
  Line, Title Case)_. R package version 0.0.0.9011,
  <https://github.com/poissonconsulting/ssdsims>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ssdsims: What the Package Does (One Line, Title Case)},
    author = {Joe Thorley and Rebecca Fisher},
    year = {2026},
    note = {R package version 0.0.0.9011},
    url = {https://github.com/poissonconsulting/ssdsims},
  }