SIMON HORNBLOWER and TONY SPAWFORTH. "Tribonian." Who's Who in the Classical World. 2000. Encyclopedia.com. 2 Dec. 2009 <http://www.encyclopedia.com>.
SIMON HORNBLOWER and TONY SPAWFORTH. "Tribonian." Who's Who in the Classical World. 2000. Encyclopedia.com. (December 2, 2009). http://www.encyclopedia.com/doc/1O10-Tribonian.html
SIMON HORNBLOWER and TONY SPAWFORTH. "Tribonian." Who's Who in the Classical World. 2000. Retrieved December 02, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O10-Tribonian.html