To cite package ‘pompom’ in publications use:

Yang X, Ram N, Molenaar P (2021). pompom: Person-Oriented Method and Perturbation on the Model. R package version 0.2.1, https://CRAN.R-project.org/package=pompom.

Corresponding BibTeX entry:

  @Manual{,
    title = {pompom: Person-Oriented Method and Perturbation on the
      Model},
    author = {Xiao Yang and Nilam Ram and Peter Molenaar},
    year = {2021},
    note = {R package version 0.2.1},
    url = {https://CRAN.R-project.org/package=pompom},
  }