To cite package ‘mlmpower’ in publications use:

  Keller B (2024). _mlmpower: Power Analysis and Data Simulation for
  Multilevel Models_. R package version 1.0.9,
  <https://CRAN.R-project.org/package=mlmpower>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mlmpower: Power Analysis and Data Simulation for Multilevel Models},
    author = {Brian T. Keller},
    year = {2024},
    note = {R package version 1.0.9},
    url = {https://CRAN.R-project.org/package=mlmpower},
  }