1
by Bennett
Published 2002
2
by Nardo
Published 2004
3
by Taylor
Published 1997
4
by Watson
Published 2002
5
6
by R. Jain
Published 2005
7
8
by Waitley
Published 2010
9
Published 2012
10
by Davids
Published 2008
11
Published 2010
12
by Griffin
Published 2005
13
by Gardner
Published 2006
14
Published 2005
15
Published 2007
16
17
by Roth, 1973-
Published 2007
18
by Juwett, 1969
Published 2007
19
by Canfield
Published 2000
20
by Mohd. Sofian Omar
Published 2002