To cite ggenealogy in publications use:

Rutter L, VanderPlas S, Cook D, Graham MA (2019). “ggenealogy: An R Package for Visualizing Genealogical Data.” Journal of Statistical Software, 89(13), 1–31. doi: 10.18637/jss.v089.i13.

Corresponding BibTeX entry:

  @Article{,
    title = {{ggenealogy}: An {R} Package for Visualizing Genealogical
      Data},
    author = {Lindsay Rutter and Susan VanderPlas and Dianne Cook and
      Michelle A. Graham},
    journal = {Journal of Statistical Software},
    year = {2019},
    volume = {89},
    number = {13},
    pages = {1--31},
    doi = {10.18637/jss.v089.i13},
  }