Micklethwait, John
A Future Perfect the Challenge and Hidden Promise of Globalization
William Heinemann, 2000
 Buku Teks
Stewart, Valerie
Change : the challenge for management
McGraw-Hill, 1983
 Buku Teks
Indonesia : the challenge of change
edited by Richard W. Baker [and others]
Institute of Southeast Asian Studies, 1999
 Buku Teks
Challenge and change in the information society
edited by Susan Hornby, Zoe Clarke
Facet, 2004
 Buku Teks
Harman, Willis
Global mind change : the promise of the 21st century
Berrett-Koehler , 1998
 Buku Teks