Asia Publisher, Seoul, Korea : Asia Publishers
Majalah, Jurnal, Buletin
the Crawford School of Economics and Government, 2010
Majalah, Jurnal, Buletin
Namho, Lee, author
EastBridge, 2005
Buku Teks
Kim, Tae Joon, author
Ewha Womans University Press, 2006
Buku Teks
University of Hawaii, 2004
Buku Teks