References

Britannica. (n.d.). Zhao Gao | Confidant of Qin, Political Intrigue, Regicide | Britannica.https://www.britannica.com/biography/Zhao-Gao

Zhao Gao. (2024, April 24). In Wikipedia. https://en.wikipedia.org/w/index.php?title=Zhao_Gao&=1219333884