The Language of the Old-Okinawan <i>Omoro Sōshi</i> 図書 Leon A. Serafim・Rumiko Shinzato ·2019-08-30 doi:10.1163/9789004414686
The Role of Contact in the Origins of the Japanese and Korean Languages 図書 J. Marshall Unger ·2009-12-31 ·『University of Hawaii Press eBooks』 doi:10.1515/9780824891015