E. A. LIVINGSTONE. "Adalbert of Bremen." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. 5 Dec. 2009 <http://www.encyclopedia.com>.
E. A. LIVINGSTONE. "Adalbert of Bremen." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. (December 5, 2009). http://www.encyclopedia.com/doc/1O95-AdalbertofBremen.html
E. A. LIVINGSTONE. "Adalbert of Bremen." The Concise Oxford Dictionary of the Christian Church. 2000. Retrieved December 05, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O95-AdalbertofBremen.html