1
2
Published 2007
3
Published 2008
4
by Ramcharan, B.G
Published 2008
5
by Li, 1958-
Published 2006
6
7
Published 1992
8
9
10
by Maritain
Published 1998
11
Published 2015
12
by Malekian
Published 1994
13
by Mohd. Azizuddin Mohd. Sani
Published 2002
14
15
Published 1994
16
by Thornberry
Published 1991
17
18
19
by Cronin
Published 1992
20
by Vandenberg
Published 1983