Okada, Hideo. 1991. Illustrations of the IPA: Japanese. Journal of the International Phonetic Association 21. 94–96. Cambridge University Press.
@article{jpn_okada1991, author = {Okada, Hideo}, journal = {Journal of the International Phonetic Association}, number = {2}, pages = {94–96}, publisher = {Cambridge University Press}, title = {Illustrations of the IPA: Japanese}, volume = {21}, year = {1991} }