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 Piers Plowman,The Piers Plowman controversy,,"Published for the Early English Text Society by K. Paul, Trench, Trübner",1910,Early English Text Society original series,,,,https://cir.nii.ac.jp/crid/1130000794831279104