Debating public administration : management challenges, choices, and opportunities
Edited by Robert F. Durant, Jennifer R.S. Durant
CRC Press, 2013
 Buku Teks
Rural and small public libraries: challenges and opportunities
edited by Brian Real
Emerald, 2018
 eBooks
Thede, Linda
Informatics and nursing opportunities & challenges
J.B. Lippincott, 2003
 Buku Teks
APEC : challenges and opportunities
edited by Chia Siow Yue
ASEAN Economic Research Unit, Institute of Southeast Asian Studies, 1994
 Buku Teks
Philosophical challenges and opportunities of globalization
editor, Oliva Blanchette, Tomonobu Imamich, George F. McLean, Togi M. P. Pangaribuan
The Council for Research in Values and Philosophy , 2001
 Buku Teks