Japan : International society of Takuboku studies
Majalah, Jurnal, Buletin
Cambridge University Press, 2012
Majalah, Jurnal, Buletin
The George Washington, D.C, 1992
Majalah, Jurnal, Buletin
CAMBRIDGE UNIVERSITY PRESS,
Majalah, Jurnal, Buletin
Faculty of international studies, Prince of Songkala university,
Majalah, Jurnal, Buletin