edited by Thom Brooks
Blackwell, 2008
Buku Teks
Institute for Global Justice,
Majalah, Jurnal, Buletin
Andrew Buchwalter
Springer, 2012
eBooks
United Nations Departemen of Public Information, 1990
Buku Teks
Salvatore, Dominick
McGraw-Hill, 1993
Buku Teks