Shibatani, Masayoshi. 1999. The languages of Japan. (Cambridge Language Surveys.) Cambridge: Cambridge University Press. xv+411pp.
@book{shibatani1990japan, address = {Cambridge}, author = {Shibatani, Masayoshi}, pages = {xv+411}, publisher = {Cambridge University Press}, series = {Cambridge Language Surveys}, title = {The languages of Japan}, year = {1999} }