Bouvier, Leon F.
World population : challenges for the 21st century
Seven Lucks Press, 1999
Buku Teks
Entering the 21st century: world development report 1999/2000
Oxford , 2000
Buku Teks
Grenville, J.A.S.
A history of the world : from the 20th to the 21st century
Routledge, 2005
Buku Teks SO
Tanaka, Akihiko
The new Middle Ages: the world system in the 21st Century
International House of Japan, 2002
Buku Teks SO
Castells, Manuel
Technopoles of the world : the making of 21st century industrial complexes
Routledge, 1994
Buku Teks SO