Sigea, Kawamoto
Eiwa Jiten (English-Japanese dictionary)
Tpkyp Kodansha 1979
 Buku Referensi
Vaccari, Oreste
Complete course of Japanese conversation grammar a new and practical method of learning the Japanese Language / Oreste Vaccari, Enko Elisa Vaccari
Charles E. Tuttle, 1952
 Buku Teks
Nanzan studies on Japanese language and culture
Nagoya, Japan : Department of Japanese Studies Nanzan University
 Majalah, Jurnal, Buletin
Simanjuntak, Herpinus
Japanese Grammar And Conversation Handbook
Kesaint Blanc, 2017
 Buku Teks
Ronshu UAI: journal of Japanese studies
Jakarta : Universitas Al Azhar Indonesia
 Majalah, Jurnal, Buletin