1
by Wager
Published 2002
2
by Brown
Published 2007
3
by Zeithaml
Published 2004
4
5
by DAVIS
Published 1998
6
by Phillips
Published 2012
7
Published 2013
8
Published 2013
9
by Fraenkel
Published 2015
10
11
by Lauer
Published 2006
12
by Wills
Published 2011
13
by Kember
Published 2013
14
by Spillner
Published 2011
15
by McMillan
Published 2010
16
by Fraenkel
Published 2012
17
by Anderson
Published 2014
18
by Cardy
Published 2004
19
by GIRDEN
Published 1996
20
Published 1995