1
by Drucker
Published 1992
2
by Vogl
Published 1996
3
Published 1991
4
by Drucker
Published 1992
5
by Davidson
Published 1994
6
7
by Feather
Published 1989
8
9
by Thurow
Published 1993
10
by Naisbitt
Published 1994
11
Published 2012