To cite the 'mdmb' package in publications use:

Robitzsch A, Luedtke O (2020). mdmb: Model Based Treatment of Missing Data. R package version 1.4-12, 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 = {2020},
    note = {R package version 1.4-12},
    url = {https://CRAN.R-project.org/package=mdmb},
  }