E. A. LIVINGSTONE. "Gelasius, St." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. 10 Feb. 2010 <http://www.encyclopedia.com>.
E. A. LIVINGSTONE. "Gelasius, St." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. (February 10, 2010). http://www.encyclopedia.com/doc/1O95-GelasiusSt.html
E. A. LIVINGSTONE. "Gelasius, St." The Concise Oxford Dictionary of the Christian Church. 2000. Retrieved February 10, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O95-GelasiusSt.html