1
by DeVito
Published 2011
2
by Tubbs
Published 2010
3
by Wood
Published 2011
4
by DeVito
Published 2009
5
by Severin
Published 2010
6
by Adler
Published 2010
7
by Wood
Published 2012
8
by Verderber
Published 1998
9
by Cragan
Published 1999
10
by DeVito
Published 2000
11
by Berko
Published 2001
12
by DeVito
Published 2013
13
by Buzan, Tony
Published 2006
14
by West
Published 2010
15
Published 2008
16
Published 2013
17
by Morreale
Published 2013
18
by Koneru
Published 2008
19
by Gamble
Published 2008
20
by Tubbs
Published 2013