著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Obolensky, Dimitri and Sampaolo, Michele",Il Commonwealth bizantino : l' Europa orientale dal 500 al 1453,"OR:The Byzantine commonwealth : Eastern Europe, 500-1453",Laterza,1974,Collezione storica,,,,https://cir.nii.ac.jp/crid/1130282269338066944