Garrison, D. R. (D. Randy), 1945-
E-learning in the 21st century : a community of inquiry framework for research and practice
Routledge, 2017
Buku Teks
European integration in the 21st Century: unity in diversity?
Sage Publications, 2012
eBooks
Tan, Oon-Seng
Problem-based learning innovation: using problems to power learning in the 21st century / oon-Seng Tan
Thomson Learning, 2003
Buku Teks
Town planning into the 21st century
edited by Andrew Blowers, Bob Evans
Routledge, 1997
Buku Teks
Ward, Ralph D.
21st century corporate board
John Wiley & Sons, 1997
Buku Teks