To cite package ‘grmtree’ in publications use:

  Arimoro O, Sajobi T, Lix L (2026). _grmtree: Recursive Partitioning
  for Graded Response Models_. R package version 0.2.0,
  <https://github.com/predicare1/grmtree>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {grmtree: Recursive Partitioning for Graded Response Models},
    author = {Olayinka I. Arimoro and Tolulope T. Sajobi and Lisa M. Lix},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://github.com/predicare1/grmtree},
  }