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
"Gierke, Otto Friedrich von and Maitland, Frederic William",Political theories of the Middle Age,,Thoemmes Press,1996,Key texts : classic studies in the history of ideas,,1855064782,,https://cir.nii.ac.jp/crid/1130282273061810432