1
Published 1992
2
Published 1995
3
4
by Halliday
Published 1992
5
Published 2007
6
by Israeli
Published 2008
7
by Jung
Published 2008
8
by Silberman
Published 1985
9
by Cohen
Published 1992
10
Published 1992
11
by Swirski
Published 1989
12
by Lewis
Published 2008
13
14
by Kaplan
Published 1992
15
Published 2008
16
by Gunter
Published 1992
17
by Laizer
Published 1996
18
by Benson
Published 1990
19
by Weiner
Published 1994
20
Published 2007