1
by Bhutto
Published 1969
2
by Josey
Published 1970
3
4
by Somjee
Published 1982
5
by Chandra Muzaffar
Published 1989
6
by Hng
Published 2004
7
by Rhodes
Published 1972
8
9
Published 2005
10
by Endacott
Published 1964
11
Published 2007
12
by Dosch
Published 2007
13
Published 2003
14
Published 2004
15
16
by Ayubi
Published 1995
17
18
by Hepburn
Published 1980
19
by Cook
Published 1979
20
by Hancock
Published 1989