Artikel Jurnal
the Ritsumeikan Center for Asia Pacific Studies (RCAPS),
Majalah, Jurnal, Buletin
Japan : Ritsumekan center for asia pacific studies ritsumekan asia pacific university Beppu-Shi, Oita-Ken, 2006,
Majalah, Jurnal, Buletin
edited by James Flood, Julie M. Jensen, Diane Lapp, James R. Squire
Macmillan, 1991
Buku Referensi
Singapore : The SEAMEO Regional English Language Centre
Majalah, Jurnal, Buletin