To cite beanplot in publications use:

Kampstra P (2008). “Beanplot: A Boxplot Alternative for Visual Comparison of Distributions.” Journal of Statistical Software, Code Snippets, 28(1), 1–9. https://doi.org/10.18637/jss.v028.c01.

Corresponding BibTeX entry:

  @Article{,
    title = {Beanplot: A Boxplot Alternative for Visual Comparison of
      Distributions},
    author = {Peter Kampstra},
    journal = {Journal of Statistical Software, Code Snippets},
    year = {2008},
    volume = {28},
    number = {1},
    pages = {1--9},
    url = {https://doi.org/10.18637/jss.v028.c01},
  }