To cite package ‘D3mirt’ in publications use:

  Forsberg E (2024). _D3mirt: Descriptive 3D Multidimensional Item
  Response Theory Modeling_. R package version 2.0.5,
  <https://CRAN.R-project.org/package=D3mirt>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {D3mirt: Descriptive 3D Multidimensional Item Response Theory Modeling},
    author = {Erik Forsberg},
    year = {2024},
    note = {R package version 2.0.5},
    url = {https://CRAN.R-project.org/package=D3mirt},
  }