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"Boudicca." Ancient History Encyclopedia. N.p., n.d. Web. 10 May
The Editors of Encyclopædia Britannica. "Brennus (Gallic Leader [flourished 4th Century BC])." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 11 May 2014.
The Editors of Encyclopædia Britannica. "Cartimandua (queen of Brigantes)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 11 May 2014.
"DAILY LIFE IN CELTIC BRITAIN." Celtic Life. N.p., n.d. Web. 11 May 2014.
"Vercingetorix." Encyclopedia of World Biography. 2004, "Vercingetorix." The Columbia Encyclopedia, 6th Ed.. 2013, and Elizabeth Knowles.
"Vercingetorix." Encyclopedia.com. HighBeam Research, 01 Jan. 2004. Web. 11 May 2014.
Emmons, Jim Tschen. "Celts." World History: Ancient and Medieval Eras. ABC-CLIO, 2014. Web. 11 May 2014.