Strategic marketing cases for 21st century Asia
by John A. Quelch ... [and others]
Prentice-Hall, 2000
 Buku Teks SO
Energy, environment and sustainable development: Challenges for the 21st century
1993
 Buku Teks SO
Bagley, Constance E.
Managers and the legal environment : strategies for the 21st century
South Western Cengage Learning, 2013
 Buku Teks
Islam in Southeast Asia : political, social and strategic challenges for the 21st century
edited by K.S. Nathan and Mohammad Hashim Kamali
ISEAS, 2005
 Buku Teks SO
Wheelen, Thomas L.
Strategic management and business policy : entering 21st century global sociey
Prentice-Hall, 1999
 Buku Teks SO