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
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