Alfonso, Anthony
Japanese language patterns a structural approach
Sophia University LL Center of Applied Linguistics, 1980
 Buku Teks
Sato, Eriko
Japanese for fummies
Wiley, 2002
 Buku Teks
Mohamad Ryan Saputra
Kegiatan organisasi nirlaba Jepang e-education di Waikabubak Sumba Barat = The activity of Japanese non profit organization e-education at Waikabubak West Sumba / Mohamad Ryan Saputra
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2015
 UI - Skripsi Membership
Guide to reading & writing Japanese
Charles E. Tutle Co.Inc, 1959,
 Buku Referensi
Indonesia's competitiveness in Japanese market
 Artikel Jurnal