ISBN 4904595505 books & textbook
Ryūkyū shogo no hoji o mezashite : shōmetsu kiki gengo o meguru giron to torikumi
Michinori Shimoji; Patrick Heinrich
Tōkyō : Kokoshuppan, 2014.9 /2014-09-01 Tankobon Hardcover
isbn-10: 4904595505 / isbn-13: 9784904595503
