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,,Sources of History Limited : Distributed [by] Hodder and Stoughton,1975,The sources of history : studies in the uses of historical evidence,,"034019281X,0340192828",,https://cir.nii.ac.jp/crid/1130000798256624512