Template:Byzantium Confronts the West
Brand, Charles M. Byzantium Confronts the West, 1180–1204. Cambridge, Massachusetts: Harvard University Press. 1968. LCCN 67-20872. OCLC 795121713 （英语）.
Brand, Charles M. Byzantium Confronts the West, 1180–1204. Cambridge, Massachusetts: Harvard University Press. 1968. LCCN 67-20872. OCLC 795121713 （英语）.