To cite the 'miceadds' package in publications use:

Robitzsch, A., Grund, S., & Henke, T. (2018). miceadds: Some additional multiple imputation functions, especially for mice. R package version 2.14-26. https://CRAN.R-project.org/package=miceadds

Corresponding BibTeX entry:

  @Manual{,
    title = {miceadds: Some additional multiple imputation functions,
      especially for mice},
    author = {Alexander Robitzsch and Simon Grund and Thorsten Henke},
    year = {2018},
    note = {R package version 2.14-26},
    url = {https://CRAN.R-project.org/package=miceadds},
  }