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 "Vakhtin, N. B. (Nikolaĭ Borisovich)",The Yukagir language in sociolinguistic perspective,,International Institute of Ethnolinguistic and Oriental Studies,1991,Monograph series,,,,https://cir.nii.ac.jp/crid/1130282268635059328