1
by Anwar Ibrahim
Published 1997
2
by Chaudhuri
Published 1990
3
by Singer
Published 2008
4
by Barbier
Published 2005
5
6
by Mansour
Published 1992
7
by Asmady Idris
Published 2000
8
Published 1996
9
by Leiman
Published 1993
10
Published 1996
11
by McWilliams
Published 1993
12
by Shoemaker
Published 1995
13
by Brill
Published 1989
14
15
by Field
Published 1994
16
by Gullick
Published 1987
17
by Li
Published 1959
18
Published 1989
19
by Jones
Published 2006
20