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 "Jahr, Ernst Håkon and International Tromsø Symposium on Language",Language conflict and language planning,,Mouton de Gruyter,1993,Trends in linguistics,,3110135396,,https://cir.nii.ac.jp/crid/1130282269821576576