Ono, Hideichi
Japanese grammar/ Hideichi Ono
The Hokuseido Press, 1973
 Buku Teks SO
Ballantine, Joseph W.
Japanese as it is spoken : a beginners grammar
Stanford University, 1945
 Buku Teks SO
Tsujita, Etsuko
Mahir berbahasa Jepang dalam sepekan = Japanese in a week
Kesaint Blanc, 2012
 Buku Teks SO
Vaccari, 490
Pictorial Chinese-Japanese characters: a new and fascinating method to learn ideography/ Enko Elisa Vaccari
Main Bookseller, 1950
 Buku Teks SO
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 SO