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 "DeFrancis, John",Colonialism and language policy in Viet Nam,,Mouton,1977,Contributions to the sociology of language,,9027976430,,https://cir.nii.ac.jp/crid/1130282272711416704