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 "Trudgill, Peter",The social differentiation of English in Norwich,,University Press,1974,Cambridge studies in linguistics,,"0521202647,9780521297455",,https://cir.nii.ac.jp/crid/1130000794297123328