Entering the 21st century: world development report 1999/2000
Oxford , 2000
 Buku Teks
Power in the 21st century: international security and international political economy in a changing world
edited by Enrico Fels, Jan-Frederik Kremer, Katharina Kronenberg
Springer, 2012
 eBooks
The Muslim World
Blackwell Publishing,
 Majalah, Jurnal, Buletin
The 21st century world atlas
Trident Press, [Date of publication not identified]
 Buku Referensi
Chatterjee, Pratap
The earth brokers : power, politics, and world development
Routledge, 1994
 Buku Teks