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 "Ko, Seongyeon",Tongue root harmony and vowel contrast in Northeast Asian languages,,Harrassowitz,2018,Turcologica,,9783447109703,,https://cir.nii.ac.jp/crid/1130282271813933696