Bjarke Frellesvig, Satoshi Kinsui, Handbook of Historical Japanese Linguistics, De Gruyter Mouton, série « Handbooks of Japanese Language and Linguistics [HJLL] », 1er avril 2024, 616 pages, ISBN9781614512851, ISBN9781614514015
Mitsugu Sakihara, Stewart Curry, Leon Angelo Serafim, Shigehisa Karimata, Moriyo Shimabukuro, Okinawan-English Wordbook : A Short Lexicon of the Okinawan Language with English Definitions and Japanese Cognates, University of Hawai‘i Press, Honolulu, Hawaï, 2006, ISBN978-0-8248-3102-8, ISBN978-0-8248-3051-9