Nitish K. Sengupta (1 Ocak 2011). "The Imperial Palas". Land of Two Rivers: A History of Bengal from the Mahabharata to Mujib. Penguin Books India. ss. 39-49. ISBN978-0-14-341678-4.
Levin, Dov H. (June 2016). "When the Great Power Gets a Vote: The Effects of Great Power Electoral Interventions on Election Results". International Studies Quarterly. 60 (2): 189-202. doi:10.1093/isq/sqv016.
2018-2019 San Mateo County Civil Grand Jury (24 Temmuz 2019). "Security of Election Announcements"(PDF). Superior Court of California. 20 Ağustos 2019 tarihinde kaynağından(PDF) arşivlendi. Erişim tarihi: 20 Ağustos 2019.
2018-2019 San Mateo County Civil Grand Jury (24 Temmuz 2019). "Security of Election Announcements"(PDF). Superior Court of California. 20 Ağustos 2019 tarihinde kaynağından(PDF) arşivlendi. Erişim tarihi: 20 Ağustos 2019.