Grammar : teach it or not
 Artikel Jurnal
Grammar and writing
Macmillan, 1981
 Buku Referensi
Lennie, Delia
Italian for you : a practical grammar
Longman, 1960
 Buku Teks SO
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