To cite package ‘ooplah’ in publications use:

  Sonabend R (2022). _ooplah: Helper Functions for Class
  Object-Oriented Programming_. R package version 0.2.0,
  <https://github.com/xoopr/ooplah>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ooplah: Helper Functions for Class Object-Oriented Programming},
    author = {Raphael Sonabend},
    year = {2022},
    note = {R package version 0.2.0},
    url = {https://github.com/xoopr/ooplah},
  }