The Japan Times, 2009
Buku Teks
Aburdene, Patricia
TransMedia, 2006
Buku Teks
Graduate School of Economics Kyoto University, 2013
Majalah, Jurnal, Buletin
The National Institute for Defense Studies
The Japan Times, 2016
Buku Teks
The National Institute for Defense Studies, 2019
Buku Teks