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 "Van Herk, Gerard",What is sociolinguistics?,2nd ed.,Wiley-Blackwell,2018,Linguistics in the world,,9781118960745,,https://cir.nii.ac.jp/crid/1130000795713292544