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
"Serafim, Leon Angelo",Shodon : the prehistory of a northern Ryukyuan dialect of Japanese = 諸鈍 : 日本語の北琉球方言の先史,,"University Microfilms International,Yushodo",1989,Yushodo current research series : unpublished thesis on language and linguistics,,,,https://cir.nii.ac.jp/crid/1130000794046554240