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
The Challenge to systems analysis: public policy and social change
edited by Grace J. Kelleher
John Wiley & Sons, 1970
 Buku Teks
New horizons for the information profession : meeting the challenge of change
edited by Hilary Dyer and Gwyneth Tseng
Taylor Graham, 1988
 Buku Teks
The Challenge of climate change for developing country: Indonesia's case
 Artikel Jurnal