1
2
by Pride, William M.
Published 2016
3
4
by Kolb, Bonita M.
Published 2015
5
by Kotler,
Published 1999
6
7
by Winkler,
Published 1999
8
by Kotler,
Published 2002
9
by Ambler,
Published 2000
10
Published 2004
11
12
13
Published 2003
14
15
by Haig,
Published 2003
16
17
by Ochoa,
Published 2005
18
by Peppers,
Published 2004
19
by Crandall,
Published 2003
20
by Zoratti,
Published 2012