To cite package ‘ggparty’ in publications use:

Borkovec M, Madin N (2019). ggparty: 'ggplot' Visualizations for the 'partykit' Package. R package version 1.0.0, https://github.com/martin-borkovec/ggparty.

Corresponding BibTeX entry:

  @Manual{,
    title = {ggparty: 'ggplot' Visualizations for the 'partykit'
      Package},
    author = {Martin Borkovec and Niyaz Madin},
    year = {2019},
    note = {R package version 1.0.0},
    url = {https://github.com/martin-borkovec/ggparty},
  }