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 "Wardhaugh, Ronald",An introduction to sociolinguistics,3rd ed,Blackwell Publishers,1998,Blackwell textbooks in linguistics,,"0631204989,0631204997",,https://cir.nii.ac.jp/crid/1130000793724438144