Nisetich, Frank. "Latin language." World Book Student. World Book, 2012. Web. 5 Dec. 2012.
<http://www.worldbookonline.com/student/article?id=ar314440>
D'Ambrosio, Beatriz S. "Roman numerals." World Book Student. World Book, 2012. Web. 5 Dec. 2012.
<http://www.worldbookonline.com/student/article?id=ar474040&st=roman+numerals&research=success>
Fantham, Elaine. "Latin literature." World Book Student. World Book, 2012. Web. 5 Dec. 2012.
<http://www.worldbookonline.com/student/article?id=ar314480&sc=-1&research=success>
"Daily Life in the Roman Empire: Education." History Alive! Ancient Greece to the First Global Age. Teachers' Curriculum Institute, 2012. Web. 05 Dec. 2012. <http://www.learntci.com/student/classes/81263/lessons/1002/sections/6668>
<http://www.worldbookonline.com/student/article?id=ar314440>
D'Ambrosio, Beatriz S. "Roman numerals." World Book Student. World Book, 2012. Web. 5 Dec. 2012.
<http://www.worldbookonline.com/student/article?id=ar474040&st=roman+numerals&research=success>
Fantham, Elaine. "Latin literature." World Book Student. World Book, 2012. Web. 5 Dec. 2012.
<http://www.worldbookonline.com/student/article?id=ar314480&sc=-1&research=success>
"Daily Life in the Roman Empire: Education." History Alive! Ancient Greece to the First Global Age. Teachers' Curriculum Institute, 2012. Web. 05 Dec. 2012. <http://www.learntci.com/student/classes/81263/lessons/1002/sections/6668>