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
"Langland, William and Pearsall, Derek Albert",Piers Plowman,,University of Exeter Press,2008,Exeter medieval English texts and studies,,9780859897846,,https://cir.nii.ac.jp/crid/1130000795865697664