Marschark, Marc
Diversity in deaf education
Oxford University Press, 2016
 eBooks
Collins, James R.
Global eras and language diversity in Indonesia
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2019
 Artikel Jurnal
Susumo, Ohno
The origin of the Japanese language
Kokusai Bunka Shinkoka, 1970
 Buku Teks
Noriko Takada
Japanese : breakthrough language series
Macmillan, 1995
 Buku Teks
Frellesvig, Bjark
A history of the Japanese language
Cambridge University Press, 2010
 Buku Teks