Challenge and change in the information society
edited by Susan Hornby, Zoe Clarke
Facet, 2004
 Buku Teks SO
Stewart, Valerie
Change : the challenge for management
McGraw-Hill, 1983
 Buku Teks SO
Indonesia : the challenge of change
edited by Richard W. Baker [and others]
Institute of Southeast Asian Studies, 1999
 Buku Teks SO
Christenson, Reo Millard
Challenge and decision : political issues of our time
Harper & Row Publishers, 1982
 Buku Teks SO
Saaty, Thomas L.
Embracing the future : meeting the challenge of our changing world
Praeger, 1990
 Buku Teks SO