1
by De Bono, Edward, 1933-
Published 1996
2
by Blackburn
Published 1999
3
by Ainon Mohd. 1950-
Published 1996
4
by Ainon Mohammad, 1950-
Published 2005
5
by de Bono, 1933-
Published 1995
6
by De Bono, 1933-
Published 1996
7
by Leo
Published 2006
8
9
by Buzan
Published 2004
10
by Buzan
Published 2003
11
by Buzan
Published 2001
12
by Buzan
Published 2002
13
by Almossawi, Ali
Published 2013
14
by De Bono
Published 2000
15
16