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 "Wojtyś, Anna","The non-surviving preterite-present verbs in English : the demise of *dugan, munan, *-nugan, *þurfan, and unnan",,Peter Lang Edition,2017,Studies in English medieval language and literature,,9783631729502,,https://cir.nii.ac.jp/crid/1130282270579674368