1
by McTaggart, Douglas.
Published 1996
2
by Boone, Louis E.
Published 1998
3
4
Published 1994
5
by Baker, Michael J.
Published 1996
6
by Jain, Subhash C.
Published 2000
7
by Moutinho, Luiz
Published 1995
8
9
by Kotler, Philip
Published 2003
10
11
by Rix, Peter
Published 2001