To cite the 'mdmb' package in publications use:

Robitzsch A, Luedtke O (2021). mdmb: Model Based Treatment of Missing Data. R package version 1.5-8, https://CRAN.R-project.org/package=mdmb.

Corresponding BibTeX entry:

  @Manual{,
    title = {mdmb: Model Based Treatment of Missing Data},
    author = {Alexander Robitzsch and Oliver Luedtke},
    year = {2021},
    note = {R package version 1.5-8},
    url = {https://CRAN.R-project.org/package=mdmb},
  }