1
Published 1996
2
by Wilson, Rodney
Published 1992
3
by Kotler, Philip
Published 2007
4
by Cartier, Carolyn L.
Published 2001
5
Published 1996
6
by Becker, Bertha K.
Published 1992
7
Published 1977
8
by Haggard, Stephan
Published 1995
9
by Tan, Gerald
Published 2000
10
Published 1997
11
12
Published 1995
13
by Mohamed Ariff, K. A, 1940-
Published 1991
14
Published 2000
15
Published 2009
16
Published 2007
17
Published 2001
18
Published 2002
19
20
by Hamilton, Gary G.
Published 2006