Faculty of international studies, Prince of Songkala university,
Majalah, Jurnal, Buletin
Graduate School of Public Administration (GSPA), Seoul National Universty,
Majalah, Jurnal, Buletin
Sage, 2018
Majalah, Jurnal, Buletin
Kyoto University, 2007
Majalah, Jurnal, Buletin
Rourke, John T., author
Mc Graw Hill, 2009
Buku Teks