1
Published 2008
2
by Cravens
Published 2000
3
by HOLSAPPLE
Published 1996
4
by MYDDELTON
Published 1991
5
by Kotler, Philip
Published 2000
6
by Abubakar Umar Mohammed
Published 2009
7
by Yukl
Published 2010
8
by Drucker
Published 2006
9
by Drucker
Published 1986
10
by Drucker
Published 2006
11
by Gladwell
Published 2005
12
by ADAIR
Published 2010
13
Published 2006
14
by Ariely
Published 2008
15
by Cravens
Published 2009
16
by Gunther
Published 2008
17
by Atrill
Published 2011
18
by Mason
Published 2002
19
by West
Published 2000
20
by Miller
Published 2007