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
"Ullmann, Walter",Law and politics in the Middle Ages : an introduction to the sources of medieval political ideas,Re-issued,Cambridge University Press,2008,The sources of history : studies in the uses of historical evidence,,9780521291576,,https://cir.nii.ac.jp/crid/1130282269968266240