Bibliography

http://www.roman-empire.net/constant/constant-index.html

http://www.roman-empire.net/decline/constantine-index.html

http://www.roman-empire.net/decline/diocletian-index.html

http://www.nationalgeographic.com/lostgospel/timeline_13.html

http://www.nationalgeographic.com/lostgospel/timeline_10.html

http://www.pbs.org/empires/romans/empire/