Rutter, Lindsay, Susan VanderPlas, Dianne Cook, and Michelle A. Graham. “Ggenealogy: An R Package for Visualizing Genealogical Data”. Journal of Statistical Software 89, no. 13 (May 29, 2019): 1–31. Accessed November 23, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v089i13.