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 : the C-text,Corr. ed,University of Exeter Press,1994,Exeter medieval English texts and studies,,0859894290,,https://cir.nii.ac.jp/crid/1130282270777144320