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
"Freedman, Paul H.",The origins of peasant servitude in medieval Catalonia,,Cambridge University Press,1991,Cambridge Iberian and Latin American studies,,0521393272,,https://cir.nii.ac.jp/crid/1130282269308380672